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02-22-2009, 11:46 AM   #1
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Pentax DFA 100mm f/2.8 Macro vs Sigma 105mm f/2.8 EX DG vs Tamron AF 90mm f/2.8 Di SP

I don't think that I can go wrong with any of these lenses however I am curious to discover individual experiences primarily pertaining to full manual and non-macro usage.

Thanks in advance for your thoughts!


02-13-2010, 07:21 PM   #2
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Hi, Sorry i can't be much help to you. However was wondering the exact same thing. I have a friend who owns the sigma (canon fit). The images are so sharp and impressive. These pictures are taken of bugs very close up, so may not apply to you.

Again would be interested in others thoughts.

02-13-2010, 08:11 PM   #3
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I own a sigma 105mm and my friend owns the tammy 90mm in canon EOS mount. The sigma seems sharper in our comparisons and had better colors in macro shots (close to or at 1:1). Bokeh on both is great though.

Outside of macro ranges, both seemed even. I prefer a longer focal length for portraits so again I'd still get the sigma if I did it again.

Any specific questions feel free to ask

Oh and autofocus sucks on both, but that is to be expected

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90mm f/2.8 di, af 90mm f/2.8, f/2.8, f/2.8 ex dg, k-mount, pentax dfa 100mm, pentax lens, sigma 105mm f/2.8, slr lens, tamron af 90mm
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