Latest Review Posted | SMC Pentax-D FA 100mm F2.8 Macro I find it very good lens for the first 1:1 macro lens. Closeup AF is ridiculously hunting, but I use manual focus or set clamp on. 1:1 focus is best to be used on a macro rail to help focusing anyway, because even 1mm is notable distance.
Lens barrell extends beyond own lens hood in the 1:1 macro mode, so it is useless for a macro closeups.
With clamp on lens switches to MF with focus locked signal sent to the camera body (at least on my K-3), so that you decide whether you ready or not. ;)
CA is obvious full open at F/2.8 but reduces as you stop down the lens even down from F/3.2. It is light and beautiful lens to use. Lack of the focus limiter is a shame but successor of this lens doesn't have clamp switch neither. |