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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 31 Mar 2009 (Tuesday) 21:59
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My Lens is Sick

 
Bendel
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Mar 31, 2009 21:59 |  #1

It grew a nasty looking red ring and became awfully pale.

Ooooh boy. I had been waiting for a long time to get this lens and I worked through my spring break to get the final bit of funding. :):):) The upgrade was from a Sigma 70-300 F4-5.6 Macro to the Canon 70-200 F4 L. What an upgrade. Focus is silent and accurate, its sharp as hell, and it actually feels like it is sturdy. Only downside I see is the zoom ring is backwards and kind of annoying at first. ;)

Comparison Pictures:
The pictures were taken at F8 and 200mm (pretty close with the sigma but not exact).

First up, Sigma 70-300 F4-5.6:

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And a crop of the focus point:
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Next Canon 70-200 F4L:
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And a crop:
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Brandon
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artyman
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Apr 01, 2009 04:15 |  #2

Looking at the neck of the Captain Morgan bottle and also the Jack Daniels label, it would seem that the focus point of the two shots are different, so is the enlargment of the same spot a fair comparison?


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Ken
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1ruffryder
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Apr 01, 2009 04:24 |  #3

your sigmas zoom ring is backwards =-)


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BenJohnson
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Apr 01, 2009 05:54 |  #4

1ruffryder wrote in post #7642734 (external link)
your sigmas zoom ring is backwards =-)

Exactly.


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KarlosDaJackal
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Apr 01, 2009 06:52 as a reply to  @ BenJohnson's post |  #5

Backwards is relative.

Erm your Sigma shot is not in focus, your Canon shot is. So all you've proved is that an in focus shot looks better than an out of focus shot, also your exif says they where shot at f/8, its hard to find a lens that's not sharp "enough" at f/8, if your going to shoot at f/8 the whole time your better off with a cheaper lens.

A fair comparison would be both at 70mm f/4. Or both at 200mm f/5.6. Manual focus with live-view. I have the APO version of that sigma and its worlds better than the shot you posted.


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Bendel
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Apr 01, 2009 07:14 |  #6

KarlosDaJackal wrote in post #7643099 (external link)
Backwards is relative.

Erm your Sigma shot is not in focus, your Canon shot is. So all you've proved is that an in focus shot looks better than an out of focus shot, also your exif says they where shot at f/8, its hard to find a lens that's not sharp "enough" at f/8, if your going to shoot at f/8 the whole time your better off with a cheaper lens.

A fair comparison would be both at 70mm f/4. Or both at 200mm f/5.6. Manual focus with live-view. I have the APO version of that sigma and its worlds better than the shot you posted.

I do have both of them at 70 F4 as well, I can post those later. This is the non APO version of the Sigma and it was focusing in the only available light in my room. If the problem is simply that the Sigma is out of focus then it is back/front focusing, which in itself is saying something.


Brandon
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Bendel
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Apr 01, 2009 07:16 |  #7

1ruffryder wrote in post #7642734 (external link)
your sigmas zoom ring is backwards =-)

Yeah I know, it's just all I've been using for about a year and a half and it gets a little confusing at times, ha. I think I'll manage getting used to it. :D


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KarlosDaJackal
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Apr 01, 2009 07:23 as a reply to  @ Bendel's post |  #8

Bendel wrote in post #7643171 (external link)
I do have both of them at 70 F4 as well, I can post those later. This is the non APO version of the Sigma and it was focusing in the only available light in my room. If the problem is simply that the Sigma is out of focus then it is back/front focusing, which in itself is saying something.

Well the non-APO version is known for not being great, but if you think it has a focus issue that is not the kind of light to test it in is it ;)

Anyway enjoy the L :cool:


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Bendel
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Apr 01, 2009 07:25 |  #9

KarlosDaJackal wrote in post #7643193 (external link)
Well the non-APO version is known for not being great, but if you think it has a focus issue that is not the kind of light to test it in is it ;)

Anyway enjoy the L :cool:

Sadly my neighbor missed the UPS truck when it came yesterday morning, so I had to wait for the truck to get back to the UPS store. By the time that happened it was too dark out so this was really my last resort, ha.

Thanks, so far I love it.


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1ruffryder
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Apr 02, 2009 00:02 |  #10

KarlosDaJackal wrote in post #7643099 (external link)
Backwards is relative.

L is the LAW


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therealmr
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Apr 02, 2009 00:43 |  #11

yo.


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BenJohnson
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Apr 02, 2009 05:58 |  #12

KarlosDaJackal wrote in post #7643193 (external link)
Well the non-APO version is known for not being great, but if you think it has a focus issue that is not the kind of light to test it in is it ;)

Anyway enjoy the L :cool:

I just got rid of the APO version of that Sigma, and it was tack sharp:

IMAGE: http://benjohnson.smugmug.com/photos/466656329_WHfgY-L.jpg

But, as mentioned, it needed plenty of light to do a decent job.

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KarlosDaJackal
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Apr 02, 2009 06:00 as a reply to  @ BenJohnson's post |  #13

Ben I also think talent has a lot to do with it ;)

Great shot.


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