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07-12-2014, 11:26 AM   #1
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Pentax 35mm f2.8 Ltd vs Sigma 18-35mm ART

is it the sigma as good as the pentax on 35mm?


07-12-2014, 01:55 PM   #2
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That's a tough question to answer without giving some criteria to judge by.
07-12-2014, 02:54 PM   #3
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These couldn't be more different in purpose. This is the same as asking if a pickup truck is better than a race car. Better at hauling furniture? Yes. Better at racing? No. The 35 is a relatively slow prime macro lens. The Sigma is a fast zoom. The Pentax is a pretty small lens, the Sigma is huge. Depends on your needs. For portraits and such, the Sigma is probably amazing.

The 35 is amazing for wide angle close ups. There's no way the Sigma could reproduce these shots:

07-31-2014, 02:01 AM   #4
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QuoteOriginally posted by Kozlok Quote
The 35 is amazing for wide angle close ups. There's no way the Sigma could reproduce these shot
If you have some A series extension tubes (like I do) those images are entirely possible. All I can say is that at close focus distances chromatic aberration can be problematic on the sigma zoom lens. Macro prime lenses typically have better correction for these kind of optical issues. Having said that, image quality at close focus using smaller apertures around f/4 image quality is excellent.

Last edited by Digitalis; 07-31-2014 at 02:24 AM.

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