Well, that allays that fear. The A50 1.2 has been disassembled and nothing but metal was found in the lens body. The elements are all glass. I guess the difference in weight could be in the metals used, then.
Does the K perform better than the A? Is the focussing smoother? Does the aperture ring of the K feel better than the A? Of course these are pretty much matters of individual taste and opinion. I haven't had any problems with my A, and it is a very satisfactory performer to me. Of course my needs may not be as critical as the needs of someone else. I only use it for available light shooting at, or very close to wide open. I'm happy with the results, so far. Where there's more light, I usually use my SMC F 50mm f/1.7 because I happily employ autofocus whenever I can, eyes are getting older all the time. Len --- > Tamron calls that stuff "optical acrylic". However I've never seen a single > example of a real Pentax lens (excluding rebadges) that had anything but > optical glass, quartz, or fluorite elements. > Kent Gittings - 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 .
