On Sep 20, 2006, at 1:51 PM, Dario Bonazza wrote: >> Most lenses do pretty well when fully stopped down. ;-) > > Yes, but since it's the Tri-Elmar <LOL*> 16-18-21, there could also > be some > doubt about its performance when fully stopped down. Quite a small > hole, > isn't it?
16mm at f/16 implies a 1mm aperture. Into the diffraction zone, I'm sure, but probably not too terrible yet. I'd expect it to reach optimum performance between f/5.6 and f/8. > (* so you thought on occasion of digital M they could "invent" the > zoom > lens, eh? Nope ;-) The Tri-Elmar is as close as a Leica rangefinder can get to a zoom lens due to the way the coupling cam and framing work. Godfrey -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
