Hello Boris, My daughter has that one - actually she has the Phoenix version. They are all made by Cosina. The lens is light and small and optically it is pretty good. But the build quality is pretty plasticky. The manual focus feel is about average for an undamped AF lens. AF speed is ok. If you buy the Phoenix, you get the matching filter that takes it 1:1 - that you have to buy separate for the Pentax. The Phoenix is also a bit cheaper.
It is small and light, and if you don't use one much, it might be a reasonable direction to go. It has always gotten good marks optically - better than would be expected for the price. -- Best regards, Bruce Sunday, February 12, 2006, 9:15:03 PM, you wrote: BL> Hi! BL> A Russian Penta Club member approached me asking to sell him my Tamron BL> 90/2.5 lens. I agreed. Same reason - unfortunately the lens is manual focus. BL> I am thinking of replacement. KEH has now very good variety of macro BL> lenses at rather reasonable prices. Say, Sigma 50/2.8 EX macro goes for BL> $144. BL> Though this may appear rather heretic I am thinking of lowly SMCP FA BL> 100/3.5 (with attachment, which I believe is just a close up filter). BL> Why - because the darn thing is small. BL> Anyone here who owns such a beast - how it performs between f/3.5 and BL> f/5.6? BL> I realize that SMCP FA 100/2.8 is better, probably far better, but it is BL> big and most probably I will not use too often, because of its size. BL> Any feedback will be appreciated. BL> Thanks. BL> Boris
