After a very ill-advised attempt to open up my 50mm f1.7 I am now left without a decent 50mm faster than f2. Am therefore interested in obtaining an f1.7 or possibly even an f1.4. K-mount would be preferred although an M42 lens would be ok. Doesn't matter if it's an Pentax-A, Pentax-M or anything as long as it has an aperture ring. Will also consider lenses made by other manufacturers for Pentax mounts; it's the flexibility of the large aperture that I'm looking for here. I know I could easily get one on that website, but IMO they're making enough money off the photographic community already. Please reply or PM if you think you have what I'm after (or similar) and would like to get rid of it. Obviously value would vary depending on the lens & condition, so tell me what you've got and what you would consider a fair price. Thanks!