What do you guys think? I'm trying to build up a collection of glass for my Pentax K100D and forthcoming K1000 and Spotmatic (SPII or F, haven't decided). I'll use a M42-Kmount adaptor as well. I'm looking for a reasonable telephoto prime (thinking about 135m?) maybe another standard prime (40mm possibly? anywhere between 40mm and 55mm), a wideangle (either 28mm or 35mm), and a macro lens (preferably longer, like a 100mm macro). I'd like each to be as fast, sharp, and contrasty as possible. Fast is important especially on the telephoto because I may use a 2x teleconverter to get some extreme telephoto with my K100D, and also because I like good bokeh (same on the standard). Fast isn't as important on the wide angle, sharpness is most important to me there.