> 1) the plastic hood is loose on the lens. It's only loose if you don't rotate the hood all the way, until it clicks into place. Once it has clicked, it's nice and snug.
> 2) it does 4 runs when AFocusing in a relatively low light (say, 1/10-1/60 > at 2.8 at ISO 100) even on a subject with a good contrast. > (so, it hunts like this: forward, back, forward, back) Just about every long macro-specific lens I tried at my last job had this issue. It has to do with the limits of AF systems and the extremely shallow DOF that one gets from a long macro lens like this. I never tried shorter macro lenses (such as the D-FA 50mm), but they might perform better. With my D-FA 100mm, if the AF hunts like you described, I just focus manually. It would be great if there was a focus limiter feature on this lens. I've seen such a thing on super-long telephoto lenses. Perhaps one company has the patent and isn't sharing. John -- http://www.neovenator.com http://www.cafepress.com/neovenatorphoto -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
