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04-21-2011, 11:59 AM   #1
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Sigma 70-200mm f/2.8 II APO EX DG Macro

Is this lens considered a true macro?

04-21-2011, 12:32 PM   #2
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QuoteOriginally posted by bluebronco Quote
Is this lens considered a true macro?
No.

I don't actually know of any zoom that is a true 1:1 macro.
04-21-2011, 12:43 PM   #3
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Kind of what I thought.
What does it take to turn my Pentax F-50mm f/1.7 into a macro? I don't quite understand extension tubes or reverse mounting.

Any suggestions?
04-21-2011, 03:15 PM   #4
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A full set of tubes or something like a Raynox DCR-250.

04-22-2011, 02:25 AM   #5
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Or even a 49mm reversing ring with extension tubes.
If you're willing to drop the kind of money it costs to buy a Sigma 70-200 just for the macro feature, you may as well get yourself a DFA 100mm f/2.8 macro WR, which is smaller, cheaper and lighter, whilst being a true 1:1 macro with excellent image quality to boot.
Other cheaper options include the Tamron 90mm f/2.8 macro, Sigma 70mm f/2.8 macro, Sigma 105mm f/2.8 macro or even Pentax DFA 50mm f/2.8 macro. All of these are true macro lenses.
04-22-2011, 06:27 AM   #6
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QuoteOriginally posted by bluebronco Quote
What does it take to turn my Pentax F-50mm f/1.7 into a macro? I don't quite understand extension tubes or reverse mounting.

Any suggestions?
Kenko made an auto focus extension tube. It's very hard to find. You can make your own. Buy a cheap auto focus 2x teleconverter on ebay and remove the glass elements. Very easy to use, just mount the teleconverter to your K20 and mount your 50mm to the teleconverter. Instant close focus ability. All functions of the K20 still work.
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