> At f5.6 through f8, I think it is, along with its twin the f1.8, > the sharpest normal lens that Pentax has manufactured.
I sort of agree, Bob, but I would say that the very high sharpness starts at f/8. The two 55/1.8 samples I've had (and I still have one of 'em) were/are only average through f/5.6, but then became super-sharp ~all-of-a-sudden~ at f/8 and above - sort of a "schizophrenic lens design", I'd say. See: http://www.takinami.com/yoshihiko/photo/lens_test/pentax_normal.html http://www.cetussoft.com/pentax/resolutn.htm The 55/1.8 and the 55/2 lenses are, of course, the same lens design, except that Pentax took a lot of the 55/1.8's and "dummied them sown" with a baffle to f/2 for (I guess) some sort of (dubious) marketing purposes. Fred
