Sigma 24-70mm F2.8 EX DG Macro - Newbie Question

[20D_Newbie]

I just received my Sigma 24-70mm F2.8 lens. I wanted the Canon 24-70mm F2.8L but I just could not justify the cost and there are NO deals on Ebay!! I have a question after reading some of the other posts about this lens. People mention having some problems with "front focusing". What is "front focusing" and how would I test my new lens to see if it suffers from this problem? People have mentioned quality issues with Sigma. Is there a relatively easy way to test the optics?

So far I have only taken a couple of shots in my office. First thoughts (from a newbie) are it is a big lens and is pretty heavy. It appears to focus fairly fast but I have not tried low light yet. The lens motor certainly makes more noise than the 70-200mm F4L USM, but it is not as bad as I feared after reading other posts. Actually, it doesn't really seem in louder than my 18-55mm kit lens.

[awp]

I am also interested in the coments on this lenses as I am weighing the difference in Canon and Sigma. I hope you get more feedback than I did. It seems that the threads move so quickly that they do not get seen unless someone comments. Help us out y'all.

[4x4rock]

Front focus is exactly what it means, the lens focus a little in front of your intented focused area.

You can download a chart from this link, print it out and take a few shots.

http://md.co.za/d70/chart.html

The Sigma 24-70 is a great lens. It's heavy but you'll get use to the weight after a while. In fact, when I put the 50 f1.8 on the camera, it's so light that I feel unstable (weird).

The best way is just go out and take pictures and see if you like the or not. That's the best test. :)

I have a grip on mine with this lens and like it alot

http://members.dslextreme.com/users/silverpath/web/sigma/20d_grip03.jpg

[Juan Zas]

This it´s a very good lens, pretty sharp even wide open. Don´t be afraid and follow the suggestion of 4x4rocks: Go out, take pictures and if you are happy with the results, it´s OK.

Front focus or back focus means that you have an object/target where you focus on (use central AF spot only), once you halfpress the shutter and you receive the red light confirmation and the green led it´s steady On (the target has been locked), you full press the shutter and takes the picture. The issue comes later when you see the photo and realize that your object it´s blured and something after (front focus) or behind (back focus) it´s clear. This it´s more noticeable wide open, with narrow DOF.

In the case you suspect you have one of this problems, one quick way to do also this test it´s put three cans in a diagonal row one after the other and touching each other, shot focusing in the middle one wide open and check if the central can it´s clear or not. You can use also three or five batteries standing up, and doing the same thing. But doit with tripod, remote (or self timer) and a lo of light.

[Juan Zas]

Sorry, I forget. Once more, our nice coleague fStopJojo has done a nice comparation between both lenses: Canon & Sigma, you can see it at:

http://www.pbase.com/fstopjojo/2470shootout

This did help me to decide to buy the Sigma and save money. The only drawback of the Sigma 24-70 it´s not USM, but the image quality in sharpness and contrast it´s suberb. All for only $360 almost !!! And you get also some Macro capability. Sigma EX glasses are pretty good.

I have received in Spain my copy from USA by mail and it´s perfect working.

Good luck and Enjoy.

[20D_Newbie]

I plan on taking some pictures later today. The problem is, I am a real newbie so sometimes it is hard to sort a newbie error from an equipment problem.

By the way Juan, how do you like the Sigma flash? I need a flash too. How does it compare to the Canon flashes?

[LightRules]

20D_Newbie, the 24-70EX should serve you well for a l-o-n-g time. In no direct reference to you per se, but realize that MANY alleged focus problems are USER error, especially with lenses faster than f2.8 where DOF (depth of field) is so narrow. You also need to know that the AF sensors (even the center point one) on your 20D are larger than those little red boxes you see in your VF, and depending on the amount of contrast available, those sensors will focus in varying amounts with repeated focus attempts. AF is NOT a perfect science, and frankly, it doesn't need to be. These sensors are close "enough" and get it right most of the time, but there are a lot of variables that come into a subject being perfectly in focus or not. My point is this: don't blame the equipment too quickly. Use the lens a lot, shoot hundreds of frames, and you'll know if something is wrong with time and consistency of results. Best wishes.

[wilflee]

If you asked me a month ago what I think of the Sigma, I would have recommended it without reservation over the Canon. But recent experiences have made me decide to buy the Canon next time over the Sigma when it does wear out.

Don't get me wrong, the Sigma is an excellent lens optically. Unless you're into shooting optical test targets for a living, you won't see difference between pictures shot with Canon vs Sigma.

Where the Sigma fails is weather sealing and external coating. During a recent trip to a dusty area for 2 weeks with a group of photographers, I found my Sigma coated with dust that's very difficult to wipe off (due to the texture of the lens barrel cover material). Other photographers using the Canon lens did not have this problem. After about a week, the Sigma's zoom ring is getting harder and harder to turn. And if I look at a light source thru the lens, I see specks of dust inside the lens. Again, those using the Canon lens did not have this issue.

Now, the Sigma comes with a 7 year warranty so I'm sure they will fix it if it breaks. I just hope it won't break in the middle of my next expedition.

If you will be using the lens in a dusty/wet area, I recommend you to go with the Canon. If not, the Sigma is an excellent value.

As for front focusing, never occured to me. My last camera is a manual focus camera so I have a habit of checking focus myself instead of depending on the smarts inside the camera. If you make a habit of checking focus before pressing the shutter button all the way, you won't have any focusing problems.

[20D_Newbie]

20D_Newbie, the 24-70EX should serve you well for a l-o-n-g time. In no direct reference to you per se, but realize that MANY alleged focus problems are USER error, especially with lenses faster than f2.8 where DOF (depth of field) is so narrow. You also need to know that the AF sensors (even the center point one) on your 20D are larger than those little red boxes you see in your VF, and depending on the amount of contrast available, those sensors will focus in varying amounts with repeated focus attempts. AF is NOT a perfect science, and frankly, it doesn't need to be. These sensors are close "enough" and get it right most of the time, but there are a lot of variables that come into a subject being perfectly in focus or not. My point is this: don't blame the equipment too quickly. Use the lens a lot, shoot hundreds of frames, and you'll know if something is wrong with time and consistency of results. Best wishes.

I am not blaming the equipment because I am very new to DSLR cameras. I was just looking for some tests to make sure the lens is right. If the lens is working correctly, any problems I may have with the pictures will be my fault.

What is the best method for posting sample images here? Should I crop to a smaller size? I assume resizing would make it hard to analyze the sharpness.

[PEACHMAN]

I am also interested in the coments on this lenses as I am weighing the difference in Canon and Sigma. I hope you get more feedback than I did. It seems that the threads move so quickly that they do not get seen unless someone comments. Help us out y'all.

Wow, have you ever used the serch engine here on this forum and punched in Sigma 24-70 f2.8 ? there are 10 pages on references to them...one of the best that ran at least for two weeks , a couple of weeks age regarding the comparison of the sig 24-70 vs the Tamron 28-75...great posting and gave lots of info, good and bad...Check in with Condyke...I have never seen slanted or misinformation come from him..and there are a host of others here equaly qualified, though many have very strong feelings about one brand over another...do the search..it will answer all your questions (and probably open up a lot more!!) goos luck! PS..the Tameron gets high reviews and I beleive is somewhat lighter..and on sale in most places thru December at around $319 US and with a 6 year warrentee...??

check this link from past threads

Sigma 24-70 vs Tamron 28-75 Weight/Size question

http://photography-on-the.net/forum/showthread.php?t=105786&highlight=24-70+f2.8

[S230]

I agree with Peachman. Originally there was little info and Tamron was much better until Sigma released the Macro version. I am still wondering what is the difference because Min.Focus distance is the same.
fStopJoJo has become pretty popular because he was nice enough to share the information which too also finally convinced me to purchase the Sigma.

For me, some of the decision was becasue I received horrible service from Canon several times. Once with a friend and if I see people treated badly, then I will probably be treated the same way. This point was proven when I sent my Canon lens 50mm 1.8 in for repair. It's bad enough for a brand new lens less than 3months old minimum usage that stopped working but worst is got it back slightly scratched. Since then I will avoid purchasing Canon. (Maybe I am not a worthy customer and purchased a CHEAP plastic toy lens)

The other reason for Sigma is their superior service I have received many many times. Fast turnaround and very friendly. maybe it's just be but I do hear many positive feedback about them.

the biggest factor is warranty being 7 years and even bigger bonus is that I live very close to them. My friend works next door to them, so getting service or walking into there daily is not an issue.;)

[Chrisc]

I'm actually just about to dispose of my 28-70 2.8 Ex as I have had no end of focus issues (back focus - especially in low light conditions), to the point I class the lens as unreliable. I get better focus lock with the slower and darker viewfinder 28-135 IS. As a result I'm considering skipping all third party lenses and going straight to the 24-70 L, big investment, but I just know one day the Sigma lens will let me down on a crucial shot and cost me money.

[condyk]

I'm actually just about to dispose of my 28-70 2.8 Ex as I have had no end of focus issues (back focus - especially in low light conditions), to the point I class the lens as unreliable. I get better focus lock with the slower and darker viewfinder 28-135 IS. As a result I'm considering skipping all third party lenses and going straight to the 24-70 L, big investment, but I just know one day the Sigma lens will let me down on a crucial shot and cost me money.

I wonder why you never returned that lens or at least let Sigma look at it. They are very responsive in my experience. The more you follow this forum the more you'll see that lens problems seem to happen with any brand. It's just bad luck, or sometimes it turns out to be user error and sometimes it's the camera body. I have a 24-105 f4 IS on order and now we see there is a problem with that lens ... and not a problem with just some of them. The current model Sigma 24-70 2.8 seems well liked by owners. I like my copy a lot.

[S230]

I'm actually just about to dispose of my 28-70 2.8 Ex as I have had no end of focus issues (back focus - especially in low light conditions), to the point I class the lens as unreliable. I get better focus lock with the slower and darker viewfinder 28-135 IS. As a result I'm considering skipping all third party lenses and going straight to the 24-70 L, big investment, but I just know one day the Sigma lens will let me down on a crucial shot and cost me money.
What version of the lens do you have? There seems to be 2 versions to everything Sigma makes which is very confusing. Even their best one 70-200 has 2 versions.

[RikWriter]

After using my Sigma extensively on this trip out to the American SW (I am posting this from the Las Vegas airport) I have come to really appreciate the lens. Very versatile and takes wonderful pictures. I will post some when I get home.

[Juan Zas]

Hi,
That is confusing, but it looks like Sigma has a bunch of models over there: 3 models for the 28-70 mm (the old version) and another 3 models for the 24-70 mm(the new version wins 4 mm in the wide side). If you look in the FM Sigma lens review you will find this 5:

Sigma 28-70mm F2.8 EX Aspherical
Sigma 28-70mm f2.8 EX Aspherical DF
Sigma 28-70mm f2.8-4 High Speed Zoom

Sigma 24-70mm f3.5-5.6 Aspherical HF
Sigma 24-70mm f2.8 EX Aspherical DG DF

And now the new:
Sigma 24-70mm f2.8 EX DG Macro

If I am wrong, please someone corrects me

[LightRules]

Juan, your close. Sigma has two "28-70" lenses that are still in production: 28-70 f2.8-4 and 28-70 EX DG f2.8 (new model). They had a 28-70 EX DF but it's not being made any more. Same for the 24-70 series. In short, the 24-70 EX DG Macro is their best yet, though in all honesty, a good copy of the older 24-70 EX DG DF is quite good.

[PEACHMAN]

In short, the 24-70 EX DG Macro is their best yet, though in all honesty, a good copy of the older 24-70 EX DG DF is quite good.

And I would be gaining what by having the macro?? There is only $30 difference at tristate photo..$339 vs $369. Is the macro (which I very seldom use) a good enough macro to be a consideration? Or should this be disregarded and a real macro lens be purchased for macro work...further more, is the dg df capable of macro at any range..??

[4x4rock]

And I would be gaining what by having the macro?? There is only $30 difference at tristate photo..$339 vs $369. Is the macro (which I very seldom use) a good enough macro to be a consideration? Or should this be disregarded and a real macro lens be purchased for macro work...further more, is the dg df capable of macro at any range..??

Probably nothing that you can notice (if there's any at all). They both have 1:3.8 magnification and minimum focus distance of .4m or 15.7in.

They could be the same lens with just the cosmetic differences and the Macro was put in because the Tamron has macro on theirs, marketing gimmicks. :confused:

[lostdoggy]

And I would be gaining what by having the macro?? There is only $30 difference at tristate photo..$339 vs $369. Is the macro (which I very seldom use) a good enough macro to be a consideration? Or should this be disregarded and a real macro lens be purchased for macro work...further more, is the dg df capable of macro at any range..??

I called Tristate this past Thursday to confirm stock for the Sigma 24-70 f2.8 EX DG and the salesperson on the phone told me the price is $399 and I told him that the price online was $369 and he told me that is the price for the import model. I didn't know that Sigma have import and USA versions like Canon, but I wasn't going to argue with him since at that point I decided that it wasn't worth my time to drive down to Manhatten to pickup the lens at that price. Norman Camera and Sigma4less both have it for less. Sigma4Less has it for $364.95 and Norman has it for $384.95. S4L tax/SH would've been $414 and Norman would've been $394. Anyway on Friday I found out in this forum that Dell now sales Sigma and had 15% discount on them and $60 off >$500. So I order a 1.4X TC w/ the lens and total (tax/SH) $487.

[PEACHMAN]

I called Tristate this past Thursday to confirm stock for the Sigma 24-70 f2.8 EX DG and the salesperson on the phone told me the price is $399 and I told him that the price online was $369 and he told me that is the price for the import model. I didn't know that Sigma have import and USA versions like Canon, but I wasn't going to argue with him since at that point I decided that it wasn't worth my time to drive down to Manhatten to pickup the lens at that price. Norman Camera and Sigma4less both have it for less. Sigma4Less has it for $364.95 and Norman has it for $384.95. S4L tax/SH would've been $414 and Norman would've been $394. Anyway on Friday I found out in this forum that Dell now sales Sigma and had 15% discount on them and $60 off >$500. So I order a 1.4X TC w/ the lens and total (tax/SH) $487.

Yikes, thats all quite interesting....I have done some business w/ Tristate Photo and they do a little bait and switch occasionally...last time the had a "buy now " price on ebay, I called and funny, they didnt have any left at that price, they were $20 higher thru the store !?!...But the usuall still have some real good buys and their service has been great when I have bought from them...There is a guy I talk to there and I will call him and say that when the price of the US model drops back to the advertised price, please give me a call...I'm betting I will hear back from him the same day !

So What's this about Dell?,What dell, the computer people?? Where did you contact them?

[PEACHMAN]

Probably nothing that you can notice (if there's any at all). They both have 1:3.8 magnification and minimum focus distance of .4m or 15.7in.

They could be the same lens with just the cosmetic differences and the Macro was put in because the Tamron has macro on theirs, marketing gimmicks. :confused:

That's what I had seen on the specs...and that's why I was wondering if I was missing something about macro function...Thanks 4X4

[lostdoggy]

Yikes, thats all quite interesting....I have done some business w/ Tristate Photo and they do a little bait and switch occasionally...last time the had a "buy now " price on ebay, I called and funny, they didnt have any left at that price, they were $20 higher thru the store !?!...But the usuall still have some real good buys and their service has been great when I have bought from them...There is a guy I talk to there and I will call him and say that when the price of the US model drops back to the advertised price, please give me a call...I'm betting I will hear back from him the same day !

So What's this about Dell?,What dell, the computer people?? Where did you contact them?

Yes the Dell Computer people. http://accessories.us.dell.com/sna/productdetail.aspx?sku=A0540526&cs=19&c=us&l=en

There is also a coupon for $35 for purchase over $300 through Techbargains site: http://www.techbargains.com/dellcoupons.cfm

But you might get a better deal from Sigma4less they have it for $365: http://www.sigma4less.com/sess/utn;jsessionid=15435d71ef22e41/shopdata/0020_Lenses/0040_Zoom/0040_Standard+Zoom/product_details.shopscript?article=0070_Sigma%2B24-70mm%2Bf%3D26slash%3D3B2%3D252E8%2BEX%2BDG%2BMacro %2Bfor%2BCanon%2BAF%2B%3D28SG2470F28MCA%3D29

I didn't buy from sigma4less because I live in NYC and have to surrender Sales tax and Shipping. They offer me free shipping if I pick it up but it had to be cash. Besides they were close for their Holiday this past weekend and Dell made a better offer.

[S230]

And I would be gaining what by having the macro?? There is only $30 difference at tristate photo..$339 vs $369. Is the macro (which I very seldom use) a good enough macro to be a consideration? Or should this be disregarded and a real macro lens be purchased for macro work...further more, is the dg df capable of macro at any range..??
The specs does say both have same min. focusing length. One forum mentioned that there is something different with glass used also. Cosmetically it's different but most important is sharpness. The new one was mentioned to handle flare better.
too bad nobody has both to do a side by side comparison.

[PEACHMAN]

Yes the Dell Computer people. http://accessories.us.dell.com/sna/productdetail.aspx?sku=A0540526&cs=19&c=us&l=en

There is also a coupon for $35 for purchase over $300 through Techbargains site: http://www.techbargains.com/dellcoupons.cfm

But you might get a better deal from Sigma4less they have it for $365: http://www.sigma4less.com/sess/utn;jsessionid=15435d71ef22e41/shopdata/0020_Lenses/0040_Zoom/0040_Standard+Zoom/product_details.shopscript?article=0070_Sigma%2B24-70mm%2Bf%3D26slash%3D3B2%3D252E8%2BEX%2BDG%2BMacro %2Bfor%2BCanon%2BAF%2B%3D28SG2470F28MCA%3D29

I didn't buy from sigma4less because I live in NYC and have to surrender Sales tax and Shipping. They offer me free shipping if I pick it up but it had to be cash. Besides they were close for their Holiday this past weekend and Dell made a better offer. Thanks for that info..ya, I noticed every camera shop is closed this week !!

[PEACHMAN]

The specs does say both have same min. focusing length. One forum mentioned that there is something different with glass used also. Cosmetically it's different but most important is sharpness. The new one was mentioned to handle flare better.
too bad nobody has both to do a side by side comparison.

thanks s230..boy, they really keep you guessing on models and specs...then you call the store and half the time they don't really know which one they are quoting...or feign ignorance !

[20D_Newbie]

Well I have used my new Sigma 24-70mm F2.8 EX DG on 3 occassions and have shot 75 or so pictures. So far, I am a little disappointed.

Too me, the lens is not any sharper than the kit lens. Of course, I am willing to put some of this on operator error but I would have thought I would have at least one really sharp picture out of 75 or so. I did a quick front/back focus test off the internet and it seems to be OK in that department. Is there any way to test the "sharpness" that would eliminate operator error?

The lens is not really that heavy but it is big. Actually, I kind of like the feel of it. So far, the focus time is pretty good, except in low light obviously. It makes more noise than my 70-200 F4L but IMO, it is not bad.

Now for my main concern. During these 3 trips I experienced two Err 99 and one lock up without any error code. The camera would not respond at all and I had to remove the battery to get it back. I have never had a problem with the kit lens or 70-200mm F4L.

I wish I had the money for the 24-70mm F2.8L but it will have to wait. I am past the 7 day period so I cannot send it back to Sigma4Less either. I guess I should contact Sigma.

[4x4rock]

20D_Newbie, can you post a picture?

It's not right that out of 75 or pics and none of them is sharp. If that's the case then something is definitely wrong with the lens.

[20D_Newbie]

I can try to post a picture. What is the best way to do it? Should I crop it to lower the file size or host it somewhere are full resolution?

Maybe I am expecting more than I should. Maybe I am compayring them to images that have been Photoshopped.

[Jon]

If you have a site that you can deep-link into, you can post them from there. If you don't, post a downsized example (max. 800 x 800 pixels; 100K) accompanied by a 100% crop of the area you were focussing on (same dimension and size restrictions) as attachments here. In either case, post the EXIF data (which you can see in ZoomBrowser or other photo-editing / sorting programs) for the picture as well.

[condyk]

Maybe I am expecting more than I should. Maybe I am compayring them to images that have been Photoshopped.

Try a shot on a tripod, or otherwise well supported, in good conditions and shooting a well contrasted and colourful image. This lens is really of stellar quality at around f5.6-8.00 and perfectly good at other ranges. As with all similar zooms I have used, including Canon and Tamron, there is some softness at 2.8 ... but some will never notice. Of course, most lenses demand at least some PP. However, the test shots I took with this lens where about the best I've seen before PP. Any lens needs getting used to. Time spend at different settings just playing is always time well spent.

[4x4rock]

Here's an example from my 24-70EX

http://members.dslextreme.com/users/silverpath/web/orchid/orchid1.jpg

[20D_Newbie]

OK, sorry for the delay. I was busy with Halloween.

This is one of the better images. It is nothing fancy, just a snapshot of my daughter at her school carnival. Here is the link to the full image.

http://www.iheater.com/images/img_2001.jpg

Here is the data:
Canon EOS 20D, 1/250s, Normal Program (Exposure), F/10, ISO400, 70mm, Average (Metering Mode).

Here is a 100% crop also.36358

[lostdoggy]

And that is not sharp??? Hmmm!!!

[PEACHMAN]

Off hand I would say that this photo is just overexposed and you won't get a sharp image in those conditions...it is either, apature too far open, shutter speed to slow, or ISO to high or of course , a combination of some or all...I would start by try putting the camera on full auto and see what you get for settings in a photo that way, then tweek your settings and record your results...It looks like a high light source on one side with low loght on the other ...causes burn out or a very high contrast photo ....not fair conditions for a test ...

[PEACHMAN]

Another thing I have found is that kids skin seems to absorb light,not much contrast,,,and while the bright cloths they may be wearing, or their eyes may be in sharp focus, the skin features are quite often reather soft...

[20D_Newbie]

I was just comparing it to my 70-200mm F/4L. Here are two pictures I took at the zoo a few weeks ago. I am new to photography but I have yet to shoot a pictue with the Sigma that looks as good as either of these. I am not blaming the lens, it could be me.
Full Size:
http://www.iheater.com/images/img_1704.jpg
http://www.iheater.com/images/img_1721.jpg
Also a 100% crop and a resized.
36389

36390

[condyk]

I own the Sigma Ex and have owned the Canon L and so I know both are capable of better. With time and patience I think you will start to see better results.

[neihn]

Condyk, an others.

I have the Sigma 24-70 EX on order from Dell (may take another week). It will be mounted on the 350D, now the $150 question for you, do I really need the battery grip for this lens? (since it is big and heavy)

Thanks, Hien

[LightRules]

Condyk, an others.

I have the Sigma 24-70 EX on order from Dell (may take another week). It will be mounted on the 350D, now the $150 question for you, do I really need the battery grip for this lens? (since it is big and heavy)

Thanks, Hien

You don't "need" it, but it does make things a bit better balanced. The vertical shutter is a real boon to have.

[PEACHMAN]

Man, my neck is getting sore looking at these sideways photos...are you working with your monitor on its side?;) :D :D These last two ar markedly improved over the first two but still a bit soft in the eyes in the young lady...There is such a shallow depth of field that the focus has got to be right on the eye...but these are much better than the first two!! I'm sure M/ Condyke is absolutly right about taking time to learn the proper use of the tool...I am just a bit impatient.........

[S230]

Here's a sample taken from the Sigma 24-70mm F2.8 EX DG Macro.
Both photos are with the Digital Rebel. The photos are NOT edited or corrected.

The first photo taken from up top downwards was taken at:
1/125sec F3.5 ISO200

second model of model sitting.
1/160sec F2.8 iso100

The full size photo, you can actually see yourself in the reflection in the eyes. Also, you can count every eyelash. The photos were also hand held with battery grip.

[4x4rock]

s230, the first pic is very nice. I like the different perspective and it works well.

Thanks

[PEACHMAN]

Both nice shots, but the second one really shows off what the lens can do! Very sharp and nice colors..Thats quite a contrast in ladies!

[20D_Newbie]

Man, my neck is getting sore looking at these sideways photos...are you working with your monitor on its side?;) :D :D These last two ar markedly improved over the first two but still a bit soft in the eyes in the young lady...There is such a shallow depth of field that the focus has got to be right on the eye...but these are much better than the first two!! I'm sure M/ Condyke is absolutly right about taking time to learn the proper use of the tool...I am just a bit impatient.........

I guess I should have taken the time to rotate the images. :)

My point is, the last 2 pictures were taken with the 70-200mm F/4L, not the 24-70mm. I have never taken an image with the 24-70mm that looked as good as either of the last two images. On the other hand, I have only taken a handful of bad images with the 70-200mm out of hundreds (and most of these are of youth soccer games where the kids are running in every shot). I was expecting the same results from the 24-70mm but so far I haven't gotten them. It is probably me. I will going to New York this weekend and will use the 24-70mm quite a bit. When I get home, I will try some shots with a tripod.

[S230]

The attached photo is taken from the Sigma 70-200 lens on the Rebel.
I had specifically taken this at 1/500sec, F2.8, ISO100, 200mm hand-held.
---

I forgot to mention the distance for the previous post.
the first image was taken 24mm
The second image was taken at 70mm

[condyk]

... do I really need the battery grip for this lens? (since it is big and heavy)


No, you don't need it but it is a very nice extra to have. The SIgma is nicely balanced in hand. The problem is really the size of the camera body which is difficult to hold securely in my view. The best option is a grip and hand strap which really transforms handling.

[jalafer]

I have received in Spain my copy from USA by mail and it´s perfect working.
.

Hola Juan,

I´m also from Spain (Bilbao). Did you pay taxes and custom clearance in your lens comming from USA ?
Once I bougth a flash from USA and I had to pay all this, at the end the final price was similar to the prices in Spain.

[neihn]

No, you don't need it but it is a very nice extra to have.

Thanks. Ordered the BG-E3 :-). Now have to deal with the wife when the bill arrives.

Hien.

[condyk]

Here's a sample taken from the Sigma 24-70mm F2.8 EX DG Macro.
Both photos are with the Digital Rebel. The photos are NOT edited or corrected.


Now those images really do show what this lens can do in the right hands.

The second one in particular has excellent POP, tho' whether that is to do with the subject or lens I'm not quite sure ;) :lol:

[S230]

Now those images really do show what this lens can do in the right hands.

The second one in particular has excellent POP, tho' whether that is to do with the subject or lens I'm not quite sure ;) :lol:
lol... seems like a lot of votes going for the 2nd photo.. :)

[Juan Zas]

Hola Juan,

I´m also from Spain (Bilbao). Did you pay taxes and custom clearance in your lens comming from USA ?
Once I bougth a flash from USA and I had to pay all this, at the end the final price was similar to the prices in Spain.

All the EU comunity has the same normative:

Lenses pay 6% tax duty + on top, VAT (16% in Spain)
Flashes, bodies, etc pay 3,7% tax duty + on top, VAT (16% Spain)

It´s the same if you buy USA or HK or Singapore.... The question is if you find the right dealer, and it he wants to send the item by "green label" or for a sample value. I think that here all items less than 100$ declare are free of customs.

In my case I bought it from Sigma4Less (They are serious), and yes, I did pay taxes. But the two items, the 24-70 and the flash 500 DG Super arrived correctly and perfect working. No issues problems with focus, etc and my copy it´s pretty sharp, even wide open.

In my case, adding all, the price of the lens and the flash are still cheaper than here. BTW I was not able to find the new Sigma 24-70 f/2.8 EX DG Macro avaible here, and Casanava has even higher prices for the other models.

[AFAccord]

Hello all. Well, i've been a huge spectator of this forum for quite some time now, but now I have an issue I need some help with. I took the plunge and ordered the Sigma 24-70mm f2.8 EX DG Macro on monday morning from Sigma4less.com. Paid $364 + 3-day shipping. WOW, was I surprised when the lens arrived here on wednesday morning! I've played around with it a little, but no serious shot yet. I did however try some focus tests. I've got the results here, and I'm not very happy, but I'm not here to gripe or even ask what went wrong. Instead, I'd like to ask about correcting my problem before an upcoming event. Looking at the photos, it's obvious that a front focusing issue exists. I'm scheduled to fly out to California on Dec 1st for a VIP premier of Hot Import Nights. I was really excited about getting this lens for the show, but now I need to know if it can be fixed in time. I am assuming that I should call Sigma (a number I should find somewhere in the paper work included with the lens?) and recieve an RMA number? My questions would be for anyone who has been through this experience. How long did this take? Was there a fee with cross-shipping involved? Thanks in advance for any help.


These images are center-crops at 70%. Focus was set to the middle of the five batteries. For perspective, these are AA sized batteries, set diagonal in a line, and are touching each other.

http://www.workofhart.net/pics/CC70p1.jpg

http://www.workofhart.net/pics/CC70p2.jpg

[neihn]

You just need to send to Sigma a copy of the receipt and a copy of warranty card. BTW, on hte test above you did not mention the focal length and f stop. My Sigma 24-70 also has front focus issuse at 28mm f2.8, but other than that it performs very well. I sent it back to Sigma last Monday, we will see if they fix the front focus issue at 24mm f2.8.

I suggest that you just go out and start shooting.
Hien.

[Poe]

I just received my Sigma 24-70mm F2.8 lens. I wanted the Canon 24-70mm F2.8L but I just could not justify the cost and there are NO deals on Ebay!!

Depends what you consider a deal. Some of the best prices I've seen on the L are about $1150 before taxes and shipping. I bought a used L on ebay for $1010 including shipping, no tax($15 shipping). Considering I saved almost $150 which is about a triple rebate in itself, I consider this a pretty good deal. Yes the lens is used, but there are no scratches or blemishes of the glass or the body except for a small 1/8 inche mark on the upper corner of the focus number window. I've been diligently watching these lenses on ebay even after a bought it to see if I can get an even better deal (IMO...haven't found one yet) since I could most likely sell this for what a paid for plus some to make up for the ebay fees.

Although If you (or someone else) manages to find this lens for a few hundred less (from a reputable seller) please let me know. I do realize that its a lot of money to lay down, and I for one don't particularly agree with these huge price gaps between non L and L lenses.

The other few things that make it worth it is the ultra fast USM, the build, that its an L and that its an EF. I've heard about the sigmas not being rechipped for newer canon bodies and also the (more often when comparing to the stats for canon) front/back focusing issues. I don't want to be sending in a new lens or not have the peace of mind that I could be buying a lens with that problem. I want it to be working right out of the box and for future canon bodies.

These type of lenses are investments and if you treat them well, they'll last you for their entire lifetime, perhaps yours and maybe future generations.

[neihn]

Poe,

Would you post a pix at 24mm f2.8 with the object about 20 feet with your lens (using auto focus)?

I have hard time to achieve auto focus with the sigma lens in that range . Manual focus works like a dream :-) so does other focal length, and fstop.

Thanks, Hien.

[S230]

Hello all. Well, i've been a huge spectator of this forum for quite some time now, but now I have an issue I need some help with. I took the plunge and ordered the Sigma 24-70mm f2.8 EX DG Macro on monday morning from Sigma4less.com. Paid $364 + 3-day shipping. WOW, was I surprised when the lens arrived here on wednesday morning! I've played around with it a little, but no serious shot yet. I did however try some focus tests. I've got the results here, and I'm not very happy, but I'm not here to gripe or even ask what went wrong. Instead, I'd like to ask about correcting my problem before an upcoming event. Looking at the photos, it's obvious that a front focusing issue exists. I'm scheduled to fly out to California on Dec 1st for a VIP premier of Hot Import Nights. I was really excited about getting this lens for the show, but now I need to know if it can be fixed in time. I am assuming that I should call Sigma (a number I should find somewhere in the paper work included with the lens?) and recieve an RMA number? My questions would be for anyone who has been through this experience. How long did this take? Was there a fee with cross-shipping involved? Thanks in advance for any help.


These images are center-crops at 70%. Focus was set to the middle of the five batteries. For perspective, these are AA sized batteries, set diagonal in a line, and are touching each other.
Congrads on your new purchase. Take the lens into Sigma and have it calibrated. With these new lens, if it has the new flash chips, they can have it done without rechipping. Because the lens is an EX (pro series), you get faster turnaround time. Also, bonus with purchasing Sigma is that you get many years of warranty (worry free for the time). Here in Canada, I have 7 years so if something goes wrong or not compatible, they will hear from me.
I don't work for Sigma nor get commission but so far I am a very happy customer and have been purchasing many lens and flash from them. Far far better than Canon's customer service.
Canon gets 1 year warranty
Sigma gets 7 years warranty.

The downside for sigma is that their QC is not very good. But the price and warranty certainly makes a difference. Image quality is amazing with this lens which is the primary reason why I bought it in the first place.

keep us posted on how your warranty/service goes.

[AFAccord]

Thanks to all of you for the advice. I'm going to call right now and see what the expected turn-around time will be. The photos I posted were at 70mm f2.8. I did the same test at 28mm f2.8 which returned the same results, but with a much softer focus throughout the photo.

[neihn]

It is not soft focus, it is out of focus (front focus). See this link where I discussed the issue
http://photography-on-the.net/forum/showthread.php?t=111545

At 70mm f2.8, I have no problem. Be aware that at f2.8 the center focus point/area (square) is acutally at least 3 times bigger. Try the above shot with the baterries further apart to avoid the focus point pill over the other batteries.

Also read this article
http://www.fredmiranda.com/forum/topic/241524

Hien.

[S230]

It is not soft focus, it is out of focus (front focus). See this link where I discussed the issue
http://photography-on-the.net/forum/showthread.php?t=111545

At 70mm f2.8, I have no problem. Be aware that at f2.8 the center focus point/area (square) is acutally at least 3 times bigger. Try the above shot with the baterries further apart to avoid the focus point pill over the other batteries.

Also read this article
http://www.fredmiranda.com/forum/topic/241524

Hien.
Sigma lens tend to have this issue. I had to take my 70-200 back and forth several times before they got it right.

[AFAccord]

Sigma lens tend to have this issue. I had to take my 70-200 back and forth several times before they got it right.

Right. Like I said, I've been a spectator for a while now, and I've come to POTN for general knowledge and reviews, including my research on this lens. I just spoke to a rep. at Sigma who told me turn-around will be 2-3 weeks, 1-2 weeks longer than I have. When some of you mention getting this fixed, you say you have 'taken' it to Sigma. Are you speaking of shipping it, or are there some local dealers/repair shops that could correct this?

[neihn]

If Sigma can fix my 24mm f2.8 front focus issue, I will go out of my way to recommend this lens to every one. But if they can't fix it, I am still happy with the lens. I just have to switch manual focus at 24mm f2.8 :-). I just want my lens back so bad.

Hien.

[LightRules]

If Sigma can fix my 24mm f2.8 front focus issue, I will go out of my way to recommend this lens to every one. But if they can't fix it, I am still happy with the lens. I just have to switch manual focus at 24mm f2.8 :-). I just want my lens back so bad.Hien.

Sigma knows how to fix it. See my last 2 pics on this page:

http://www.pbase.com/fstopjojo/2470

[merigold]

I looked at the Sig 24-70 f2.8 and decided on the Tamron SP AF28-75MM F/2.8 MACRO XR Di LD-IF F. I love it. Here is a link to some pics i've taken with it. http://www.flickr.com/photos/merigold/sets/1250241/

[4x4rock]

Sigma knows how to fix it. See my last 2 pics on this page:

http://www.pbase.com/fstopjojo/2470

fstopjojo, if all Sigma lenses come back like yours, then we'll be all in Sigma heaven :lol:

My lens will arrive at Sigma NY Service tomorrow. Can't wait for it to get back. :cry:

[neihn]

fstopjojo, I like to personally say thanks to you. Yes, I saw the photos at your site before. That's is why I decide to keep the lens.
Hien.

[kufel]

focusing issues do not exist on my copy. some "Macro " samples here:
www.digitalendeavour.com/macro/
24-70 EX DG Macro, unprocessed jpegs form 1D Mark II
(The dominos, the rest is with 100mm Canon Macro)

[LightRules]

fstopjojo, if all Sigma lenses come back like yours, then we'll be all in Sigma heaven :lol:

My lens will arrive at Sigma NY Service tomorrow. Can't wait for it to get back. :cry:

You should be all right. Hopefully it only takes 1 try for them to get it right. Some folks have had to work with them to get it right, but it's worth it. But hopefully they get it done the first time around.

I miss my 24-70EX almost every day. When this lens is right, it's remarkable. Best wishes.

[LightRules]

fstopjojo, I like to personally say thanks to you. Yes, I saw the photos at your site before. That's is why I decide to keep the lens.
Hien.

Thanks and you're welcome. Now go get the Canon 70-200 IS or Sigma 120-300 EX :lol: You can thank me again after that.

[S230]

Right. Like I said, I've been a spectator for a while now, and I've come to POTN for general knowledge and reviews, including my research on this lens. I just spoke to a rep. at Sigma who told me turn-around will be 2-3 weeks, 1-2 weeks longer than I have. When some of you mention getting this fixed, you say you have 'taken' it to Sigma. Are you speaking of shipping it, or are there some local dealers/repair shops that could correct this?
In my case, it is very different they are located behind where I live and also my friend works right next to their shop (literally), therefore if they cannot get it fixed, they will surely hear from me daily or every hour. Good thing is that so far I do not need to do that because they are very professional at the service and probably just me I got a manufacturing defective lens. Not sure how it passed QC.
Ironically, same thing happened with my Sigma flash. the Circuit needed replacement and they did that very quickly.

[neihn]

Just got off the phone with Sigma. They said that they fixed the lens (updating the flexboard). They are going to ship it out to me today. I probably receive the lens this Friday, that makes 2 weeks turn around (coast to coast, OR->NY, NY->OR). Can't wait to get my lens back.
Hien.

[Raymate]

Front focus is exactly what it means, the lens focus a little in front of your intented focused area.

You can download a chart from this link, print it out and take a few shots.

http://md.co.za/d70/chart.html

The Sigma 24-70 is a great lens. It's heavy but you'll get use to the weight after a while. In fact, when I put the 50 f1.8 on the camera, it's so light that I feel unstable (weird).

The best way is just go out and take pictures and see if you like the or not. That's the best test. :)

I have a grip on mine with this lens and like it alot

http://members.dslextreme.com/users/silverpath/web/sigma/20d_grip03.jpg


Sorry bit of topic, but I see you have an extra strap on the grip and body. Who makes it and where can i get one.

Cheers

R

[4x4rock]

Sorry bit of topic, but I see you have an extra strap on the grip and body. Who makes it and where can i get one.

Cheers

R

Raymate. It's the cheapo handstrap from eBay. Similar to Canon E-1 strap but this one comes with the adapter that you screw into the tripod mount so it can be used with or without the battery grip.

[Raymate]

Raymate. It's the cheapo handstrap from eBay. Similar to Canon E-1 strap but this one comes with the adapter that you screw into the tripod mount so it can be used with or without the battery grip.

Thanks for that, I think this is just what I need.

Cheers

R :)

[condyk]

Thanks for that, I think this is just what I need.

Cheers

R :)

Mr R ... the handstrap with grip and 350D is a great combo. The Canon one is cheap enough (on Ebay anyway for a for Canon!!) but the adapter thing 4x4rock mentions sounds like a great idea.

[Raymate]

If I cant get the one 4x4rock talked about my local dealer has a E1 in stock so shall go and pick that up.

R :)

[4x4rock]

If I cant get the one 4x4rock talked about my local dealer has a E1 in stock so shall go and pick that up.

R :)

If you can get the E-1 get it. It feels little more comfortable than the one I had from eBay.

[Raymate]

If you can get the E-1 get it. It feels little more comfortable than the one I had from eBay.

Thanks, shall call them now.

Thanks for everyones help :)

R :)