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FORUMS Photo Sharing & Discussion Transportation 
Thread started 08 Feb 2007 (Thursday) 06:38
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Brisbane Motor Show

 
Ospi
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Feb 08, 2007 06:38 |  #1

Well first time i had a chance to seriously test my new Sigma 17-70.

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Have to say even though my lens is slightly back focusing (repairs soon) im quite disappointed with the results from it. In most shots the intended focus point is way oof yet still the sharpest point. Not sure if this is because of the back focusing, shooting iso 1600 or the relatively low shutter speeds and wide open apature i was using (or a combination of all) but even then i expected better.

Canon EOS 90D
Sigma 150-600mm f/5-6.3 Contemporary
Canon 100mm f/2.8L IS Macro

  
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PhotosGuy
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Feb 08, 2007 06:45 |  #2

They seem OK to me. Have you tested with a tripod on something with enough contrast for the cam to lock on to? Like wide open on a ruler at 45-degrees?


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Ospi
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Feb 08, 2007 06:56 |  #3

PhotosGuy wrote in post #2674046 (external link)
They seem OK to me. Have you tested with a tripod on something with enough contrast for the cam to lock on to? Like wide open on a ruler at 45-degrees?

Yeah iv done all those and a few more "real world" shots and its confirmed to be FF. Still kinda thought i would get sharper results then what i did though, but as i said, slower shutter speeds, a lot of reflections to confuse the camera etc might have also contributed. I hope so anyway, im really expecting good thigns from this lens.


Canon EOS 90D
Sigma 150-600mm f/5-6.3 Contemporary
Canon 100mm f/2.8L IS Macro

  
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Feb 08, 2007 07:01 |  #4

They look fine to me !


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Brisbane Motor Show
FORUMS Photo Sharing & Discussion Transportation 
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x 1600
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