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02-05-2011, 08:00 PM   #1
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Another "Which macro?"

I have read all the reviews from PF and Amazon, B&H, etc and have narrowed my choices down. I would truly appreciate some examples and personal input from users of the following lenses:

Sigma 70mm Macro
Sigma 105mm Macro
Tamron 90mm Macro

I am looking at ~$500 and would appreciate any input you could provide.

Thanks!

02-05-2011, 08:31 PM   #2
Ash
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The most important question to answer is what do you intend to shoot with the lens? This will determine the most appropriate focal length for a macro lens and narrow down the options a little better. Between the three lenses, there isn't much difference other than focal length. All these lenses are very highly regarded, so if price is an issue, then the cheapest of these would make sense, and certainly won't disappoint you in terms of performance - but the focal length question is quite important to settle first.
02-05-2011, 08:59 PM   #3
hcc
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I note that you did not include the D-FA Pentax 100mm (F2.8 macro WR or F2.8 macro). While there are differences, the good news is that the Sigma 105mm, Tamron 90mm and Pentax dFA100mm are all excellent lenses and you canot get wrong. (I cannot speak of of Sigma 70mm that I do not know.)

About 6-9 months ago, I was looking for a 100mm macro. After some testing in the local store, I felt that the Sigma 105 mm was too heavy and I prefered the Tamron 90mm: it felt simply better in my hand. At the time, the Pentax DFA100mm was nearly 40% more expensive than the Tamron and could not afford.

To add to Ash's comment, all these lenses are well considered. If you can, try them on your camera in your local store. (Most good stores will be happy for you to bing your camera.) The hand feel of the lens on your camera may be the main point in your decision.
02-05-2011, 09:03 PM   #4
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Ash nailed it. A non-reversed lens cannot focus closer than its focal length; and that's the distance at which you get maximum magnification. Thus the shorter the lens, the closer you must work.

So, what's your proposed work situation? How close must you be to your subjects? What ARE your subjects? Are they dead, alive, indeterminate, irrelevant? Will you shoot freehand or tripodded? Why do you think you need a costly dedicated AF lens instead of a less expensive option? Hey, go ahead, spend as much as you want. It's only money. It grows on trees, right?

02-05-2011, 09:45 PM   #5
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What can we tell you that all the other reviews did not?
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