Originally posted by VaughnA Plastic, bah, they're making planes out of it, why can't it hold up a tiny little prime.
Originally posted by Peter Zack on a lens this size and weight, I wouldn't worry one bit about the mount not being metal. In fact some of these composite plastics are much stronger than the metal mounts.
Your just as likely to break the glass as the much as the mount if you drop it on concrete. Lets put this one to rest now and forever.
Both excellent advice. The metal-mount primes have been sitting right there, available for years. As for the aperture ring—it's a lens made for the entry market, and that market doesn't know/care about aperture control on the lens. Again, there are already lenses in the Pentax lineup that have that feature.
To give an indication of the market that this camera is intended for, I'd like to refer to a journal entry I made a few weeks ago. In the Japanese middle-class, family market, Pentax is arguably (and this is only anecdotal, of course)
more appealing than Nikon. Japan is in a strong deflationary period. Value is king.