"But on --manual focus-- lenses like the K/M/A which was the original comparison, the build quality effects the ease of use because its easier to manual focus a really well made lens then an el crapo. jco"
I haven't entered this fray before now, BUT, I recently picked up the 50~200 DA zoom. Just out of curoisity I shot several views with the zoom at 135 and 200, and then duplicated them with the 135 M and the 200 M. I have to say the optical quality of the zoom is superior in every respect. As to mechanics, I will allow the DA to get as old as the two M versions before I pass final judgement! :-) However, The DA is half the weight of the 200 and being AF is 10X easier to use. FWIW Walt -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net

