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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 23 Jul 2013 (Tuesday) 20:34
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Sigma astonishes the world again: 18-35mm f/1.8

 
Wilt
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Jul 24, 2013 10:30 |  #76

TheLensGuy wrote in post #16148121 (external link)
I have never had to dial in a single MFA number on any of the Canon lenses I have owned (L or non-L), I really don't understand how people have so much bad luck with Canon. Could it be your body that is not calibrated or mine that focuses better (5D3)?

And in owning three different Canon dSLR bodies, I have never found the need to adjust ANY lens (Canon, Tamron, Tokina) for focus accuracy.

TheLensGuy wrote in post #16148121 (external link)
Sorry, I didn't mean to just come in and bring in all this negativity. But you have to understand how I have tried SO MANY sigma lenses over the course of years and never got one that actually worked properly.

And in reading so many different testimonies on POTN about needing to buy and return multiple Sigma lenses to find a single one which they are satisfied about focus, and in reading about folks who own multiple Sigmas and send each one in to Sigma warranty repair to get satisfaction with focus for all of their Sigmas,
I remain very leery of buying one myself. When one does not see anywhere near the volume of posts about focus error with other brands, the track record seems to speak volumes, doesn't it?! :confused:


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Blubayou
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Jul 24, 2013 10:33 |  #77

I'm intrigued by this lens for my cropper, but I can only justify it to myself when I think of it like a 1.8 prime, that happens to have a variable FL, rather than seeing it as a "zoom" (if that makes any sense). The range of 18-35 is a neither wide enough or long enough to be the zoom I'd want it to be




  
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FEChariot
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Jul 24, 2013 10:37 |  #78

Aressem wrote in post #16149728 (external link)
Elaborate. I've shot some gorgeous landscape and long exposure photos with this combo.

Its one thing if you had the 17-40 before the more recent offerings became available, but for someone buying a lens now it doesn't make sence. For less than the 17-40, one can buy the 17-50/2.8 OS and get an extra stop, stabilization, an extra 10mm, and sharper images. For a little more, you can get the 18-35 and get over two stops faster aperture, much sharper images and only loose 1mm on the wide end and 5 on the long end. There is also the Tamron 17-50 non VC for much less. The 15-85 is sharper and is essentially the same aperature value over the 17-40 range and is stabilized.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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dochollidayda
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Jul 24, 2013 10:39 |  #79

Aressem wrote in post #16149679 (external link)
Looking at the shot he posted, I'd say the 24L was the perfect lens for his application. You guys kill me with statements as vague as this.

And what is wrong with the 17-40 on crop? That's a great combo depending on your needs.

I agree with you, although my opinion doesn't hold much value, I am not a seasoned photographer or anything, but what works for someone works for them. What's the big deal?

I know plenty of people have Sigma 35/1.4 for wide open shots of cats, but it didnt work for me, I don't have it.


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Tom ­ Reichner
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Jul 24, 2013 10:42 |  #80

LostArk wrote in post #16149615 (external link)
Tom -

It's because of the laws of physics, not because Sigma is holding anything back. An 18-35 f/1.8 that projected an image circle covering full frame would have to have a diameter 100% larger and it would weigh lord knows how much. Have you seen the Nikon 14-24 f/2.8? And it's only a 2.8!

Noah,
I understand the laws of physics, as they apply to lens construction.
My two main everyday lenses are Canon's 400mm f2.8 and the 100-400mm. These are the lenses I pick up & shoot with on an everyday basis - so I consider Nikon's 14-24 to be very manageable, as far as size and weight are concerned.
I see no problem whatsoever with having a full frame 18-35 f1.8 that is double the size of the current crop model. An extra pound or two isn't a problem.
Size, weight, and price are things that many photographers are willing to completely overlook, if doing so will help them to better create the images they want to make.


"Your" and "you're" are different words with completely different meanings - please use the correct one.
"They're", "their", and "there" are different words with completely different meanings - please use the correct one.
"Fare" and "fair" are different words with completely different meanings - please use the correct one. The proper expression is "moot point", NOT "mute point".

  
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FEChariot
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Jul 24, 2013 10:43 |  #81

LostArk wrote in post #16149559 (external link)
The above photo is at ISO 6400 and f/1.4. At f/1.8 it would have been lost to noise.

You have a nice flickr btw. Still I don't follow this. You shot that with a 7D and 24L, but had you had a 6D and a Sigma 35/1.4 (Which would have cost roughly the same), you could have gotten the same shot with a much sharper and cleaner image.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Charlie
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Jul 24, 2013 10:43 |  #82

Blubayou wrote in post #16149743 (external link)
I'm intrigued by this lens for my cropper, but I can only justify it to myself when I think of it like a 1.8 prime, that happens to have a variable FL, rather than seeing it as a "zoom" (if that makes any sense). The range of 18-35 is a neither wide enough or long enough to be the zoom I'd want it to be

you can always get a better range like the 17-50, or 15-85.... of course they come with penalties as well, but it's good to have options. If canon/sigma/tamron made a 24-50mm F1.8 for FF, i'de be all over it. IMO, the wide to normal perspective is a very drastic change, despite short zoom factor, and that would win me over.


Sony A7riii/A9 - FE 12-24/4 - FE 24-240 - CV 21/3.5 - FE 28/2 - FE 35/2.8 - FE 50/1.8 - FE 85/1.8 - EF 135/1.8 Art - F 600/5.6 - CZ 100-300 - Astro Rok 14/2.8 - Tamron 28-75/2.8 RXD, 70-200/2.8 VC

  
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Tommy1957
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Jul 24, 2013 10:44 |  #83

DreDaze wrote in post #16149697 (external link)
...
17-40L makes zero sense on a crop body

Blanket statements like this, and those of TLG, make more of a comment about the preferences and pre-dispositions of those making the statement than about any equipment they happen to mention. Just because YOU don't find something useful does NOT mean someone else won't.

I don't own a 17-40. But if I were shooting a crop sensor camera (I am) and needed better resistance to flare and a lot less vignetting, I would go with a 17-40 over a 17-55. Better glass for the intended purpose, and for less money, too. Makes sense to me.




  
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archer1960
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Jul 24, 2013 10:45 |  #84

Rui Peixoto wrote in post #16148136 (external link)
what's canon equivalent of this lens?

They don't have one. 17-40 is probably closest, but it's more than a stop slower.


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FEChariot
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Jul 24, 2013 10:46 |  #85

Tom Reichner wrote in post #16149606 (external link)
Well, if it's going to be a crop-only lens, how 'bout a 15-30mm f1.8 zoom? Like the 18-35, but actually wide enough for most people shooting crops.

Sounds a little like envy to me here Tom. Time to buy a crop camera as a back up? I think the 18-35 is a good focal length range for this. I would really like to buy one, but I just can't justify having a 18-35 and a 17-50 and I need the OS for video and I already have a 30/1.4.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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cdang
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Jul 24, 2013 10:48 |  #86

ICarumba wrote in post #16149159 (external link)
This lens is not for ff right?

TheLensGuy wrote in post #16148080 (external link)
And a $25,000 subaru impreza does 0-60 almost as fast as a $75,000 BMW M3, but they are totally different cars. For starters, BMW handles a lot better. Not everything is 0-60 times.

Replace the 0-60 with fast aperture and sharpness, and there you have your Sigma. I wonder how the focus is in that thing and how many usb dock sessions you have to have before it starts producing reliable results.

The Sigma Art line requires the art of focus adjustment.


Obviously you've never driven the Subaru.




  
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waterrockets
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Jul 24, 2013 10:48 |  #87

MotorPro wrote in post #16149076 (external link)
You can buy a $10,000 used civic, chip it and destroy 911s. That doesn't mean I will pick the civic over Porsche


So what your saying is you buy things to show off the emblems instead of what does the job best?

Oversimplify much? If you don't think driving a Porsche 911 is a better experience than a chipped Civic, then you don't need one. Some people feel differently. This isn't the 1980s where we pre-teen boys look at 0-60 times every month in Road & Track -- show me Nürburgring times for a $10k Civic with a $300 chip in it. Some people live a lifestyle where they take clients to play golf, and a chipped Civic is not appropriate. It depends on what you're measuring. A Smart car has as many seats as a Veyron, so the Veyron is totally a waste of money, right? If you want to start comparing $100,000 Nissans to $100,000 Porsches, then there's a conversation there.

Is this Sigma lens waterproof? How fast is the focus motor, and what is the stepper resolution compared to a USM L lens? How quick is the service turnaround if the shooter is a CPL member? Does LR5 recognize it for lens corrections?

A bad answer to any of these questions would not be a deal breaker for everyone, but they would be a deal breaker for some. I don't own any Sigmas yet, but probably will. The point is that a Sigma and an L are not the same. This Sigma offers an impressive aperture for a zoom, and has a great price -- but it's still lacking in some areas, and each consumer needs to weigh everything when buying gear.

This is so much more than buying an emblem.


1D MkIV | 1D MkIII | 550D w/grip & ML| EF 70-200mm f2.8L| EF 24-105mm f4L IS | Canon EF 100-400mm f/4.5-5.6L IS | Samyang 14mm f/2.8 IF ED UMC | 430EXii | EF 50mm f1.8

  
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Aressem
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Jul 24, 2013 10:52 |  #88

waterrockets wrote in post #16149803 (external link)
Oversimplify much? If you don't think driving a Porsche 911 is a better experience than a chipped Civic, then you don't need one. Some people feel differently. This isn't the 1980s where we pre-teen boys look at 0-60 times every month in Road & Track -- show me Nürburgring times for a $10k Civic with a $300 chip in it. Some people live a lifestyle where they take clients to play golf, and a chipped Civic is not appropriate. It depends on what you're measuring. A Smart car has as many seats as a Veyron, so the Veyron is totally a waste of money, right? If you want to start comparing $100,000 Nissans to $100,000 Porsches, then there's a conversation there.

Is this Sigma lens waterproof? How fast is the focus motor, and what is the stepper resolution compared to a USM L lens? How quick is the service turnaround if the shooter is a CPL member? Does LR5 recognize it for lens corrections?

A bad answer to any of these questions would not be a deal breaker for everyone, but they would be a deal breaker for some. I don't own any Sigmas yet, but probably will. The point is that a Sigma and an L are not the same. This Sigma offers an impressive aperture for a zoom, and has a great price -- but it's still lacking in some areas, and each consumer needs to weigh everything when buying gear.

This is so much more than buying an emblem.

Well said.


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w0m
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Jul 24, 2013 11:00 |  #89

Not even goign to quote; but you guys are framing it wrong I think. If you are considering an 18-35 f/1.8; you likely don't have a FF camera. Thus; debating between 18-35 sharpness vs 24L sharpness; the DXO numbers for the 24L would need to be adjusted as taken from a crop sensor; which should make them better (Hence raw DXO comparison is somewhat worthless).

Now; as for it being dumb to buy a 18-35S over 24L; if you only shoot crop; why? 18-35 range is much greater than the fixed 24mm; and lets not forgoet it wasn't that long ago 28mm was 'standard' wide on FF.


[6D]

  
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Tom ­ Reichner
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Jul 24, 2013 11:10 |  #90

FEChariot wrote in post #16149794 (external link)
Sounds a little like envy to me here Tom. Time to buy a crop camera as a back up? I think the 18-35 is a good focal length range for this. I would really like to buy one, but I just can't justify having a 18-35 and a 17-50 and I need the OS for video and I already have a 30/1.4.

Envy? I do not understand that statement. Are you suggesting that I am envious of something? If so, what is it that you think I am envious of?

You also ask if it is time to buy a crop camera as a backup. Why would I buy a crop camera as a backup; I already have a crop body, and I use it as my main camera. 80% of all the images I shoot are shot with my 1.6 crop 50D. The remaining 20% are shot with my full frame 5D.

Are you suggesting that I should buy an additional crop camera, and use it as a 2nd backup? Or are you saying that I should ditch my full frame 5D (my current backup) and get another crop to replace it? In any event, I do not understand the statement you made, and would appreciate some clarification.


"Your" and "you're" are different words with completely different meanings - please use the correct one.
"They're", "their", and "there" are different words with completely different meanings - please use the correct one.
"Fare" and "fair" are different words with completely different meanings - please use the correct one. The proper expression is "moot point", NOT "mute point".

  
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Sigma astonishes the world again: 18-35mm f/1.8
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