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09-18-2008, 11:55 AM   #16
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Ok, I think what you are not getting is that the 24-70F/2.8 is nothing like the 24-60 F/2.8 at least from what I gathered around the internet..

Here is the lens I have..
Notice it has a clutch and inside is where all the gears and glass is.


Here is a bigger picture that might explain it better than I could.

So everything from the clutch forward was replaced.

09-18-2008, 12:16 PM   #17
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QuoteOriginally posted by jgredline Quote
Ok, I think what you are not getting is that the 24-70F/2.8 is nothing like the 24-60 F/2.8 at least from what I gathered around the internet..
absolutely - Sigma is good in that they post optical designs conveniently
on their website and also MTF charts (at least you can get some rough idea about sharpness)

The large-aperture, wide-angle zoom lens that is an excellent compact companion for digital SLR cameras. 24-60mm F2.8 EX DG - SIGMA CORPORATION

Large aperture standard zoom lens provides superior performance both for Digital SLR Cameras and 35mm Film SLR Cameras. 24-70mm F2.8 EX DG MACRO - SIGMA CORPORATION

very clear that they are different
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