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06-08-2016, 08:23 AM   #16
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This if the current offering:
Macro Lenses / K-mount Lenses / Lenses / Products | RICOH IMAGING

The 35 will work on full frame, the 50 is probably the sharpest. The 100 is pretty cheaply built but excellent.

There is legacy glass from Tamron 90mm F2.8 in K-mount and from Sigma 70/105/180mm F2.8 in K-mount. They don't do new K-mount anymore. Maybe when enough demand comes from K-1 users. Maybe we can start kickstarters in co÷peration with Sigma.

06-08-2016, 02:18 PM   #17
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QuoteOriginally posted by Adam Quote
The Sigma and Pentax FA* 85mm are also quite sharp, but not good for close-ups.
I can vouch for the Sigma 85mm in terms of sharpness and overall image quality. Very impressive in those areas.

It'll get plenty close enough for people pictures, but for small objects it's not a great choice since it has to be almost a meter away to focus...maybe just a bit less. The AF is also not the fastest, so it's not the best choice for erratic moving subjects.
06-08-2016, 05:43 PM   #18
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What magnification range do you need? A lot of "close-focusing" lenses and some called "macro" can accomplish ratios between 1:6 to 1:4, and for a lot of subjects that would be fine. But if you want the lens to give your true macro magnification -- 1:1 or greater -- that will reduce the number of lenses you can consider. True macro lenses are not necessarily the fastest. And with very slim DOF at high magnification, one might want to stop down the lens a little if light permits. In your project, are you limited to available light or low light?
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