> Its a pity the small aperture makes it next to useless for my > purposes... the 250-600mm f/5.6 would suit me better, despite its > size and weight.
I have never had a chance to handle one of these critters before, but I haven't had much interest in locating one, either. The combination of a miserly 1.5:1 zoom ratio is not overly enticing, and having a variable aperture is not exactly a plus for me, either. To me, the idea of producing a zoom mirror was a gutsy decision by Pentax, although I doubt that many were sold, so "gutsy" may not necessarily imply "savvy". Something like a 250-600/5.6 zoom would make a lot more sense to me. I've owned a Tokina AT-X 150-500/5.6 previously, and found 150-500 to be a useful zoom range (with constant aperture) (although the lens is a little soft above 300mm). I'm looking forward to shortly trying out a K 135-600/6.7 - that also seems like it should be a useful zoom range (and with that - to me - very desirable constant aperture) - I do hope it's sharper than the 150-500/5.6. Fred - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
