Godfrey, Kiron did make a quite good 28/2 in K mount. You may want to look around to see if there is an SMC-A version of it (Mine's in plain K mount). I'm not entirely sure, but suspect the Vivitar 28/2 is also the same design.
-Adam Godfrey DiGiorgi wrote: > The 50mm focal length for an SLR is generally implemented as a > symmetrical lens design because there's enough room for the moving > mirror behind it, so the size is dependent upon the f/stop and light > path desired, coupled with the bulkiness of the mount that supports > the features you want. Compare a Leica Summilux-M 50/1.4 lens with a > Pentax FA50/1.4 ... the Pentax is darn near the same size, despite > the mount having a lot more bits in it than the Leica. > > Fast 35mm SLR lenses are generally mild inverted telephotos so the > front elements grow in size compared to RF camera lenses of yore. > Modern RF 35mm are also often mild inverted tele designs ... my last > Summicron-M 35/2 ASPH was not much smaller than the Pentax FA35/2 AL, > if at all. > > I don't know that a high quality, very compact 50mm f/2.8 Limited > would be a bad idea. Although I appreciate the speed of my FA50/1.4, > it is most often at lens openings of f/4-f/8. Of course, I doubt that > I need another 50mm lens and would likely not buy it... That DA28/2 > Limited, on the other hand, would be my most used lens. > > Godfrey > > On Sep 16, 2006, at 8:30 AM, Shel Belinkoff wrote: > > >>Why couldn't they make a smaller 50/1.4? >> >>Yes, a nice, fast 28 would be wonderful, and a 35/1.4 would be a >>kick as >>well. >> >>Jumping to a 50/2.8 would seem like a real step backwards for any >>number of >>reasons. >> >> >>>I don't see that they'd be able to make a 50mm f/1.4-1.2 lens much >>>smaller than the current FA50/1.4 and it is a great performer. It >>>would be much more to my liking if they released the same optics in a >>>D-FA lens mount. A compact, pancake DA50/2.8 Limited might be neat, >>>but I'd rather they did a compact DA28/2 Limited! > > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
