Hello all I have a question. I was playing with my Pentax K-m. Noting the 18mm to 55mm settings, I was wondering if it is possible to mount this new lens on to my older SF-10 body and have the camera work in programed mode and shutter priority mode. The reason being that the lens gives me a "cheap" very wide angle lens that gets a close view to the borrowed SMC 15mm M-series lens I had to play with when I was doing a article for Pentax Canada called "The Pentax Prism". It was published in the spring of 1984. I shot the pictures for it in the summer of 1983. I really liked that lens and although very few pictures where taken with it, I remember the wide field of view and if this lens works on the older 35mm camera body, I can have this view that is mine, bought and payed for! Any thoughts on this subject?