Hi, I had some questions about some lenses I've recently acquired. A few months ago a friend of the family found two 30 year old camera's in his basement. He gave one to me - a Pentax K1000 (35mm). His camera broke last month, and he passed on some of the lenses to me. I've had some experience with SLR's (I used to own a Rebel K2) but I don't know much about these that he's given me. One is a Tou/five star 75-200mm telephoto lens, and one is a 50mm Minolta MD Rokkor-x. I've tried to put them on the Pentax but they don't seem to fit right. I didn't want to mess them up so I didn't try too hard, I figured I'd be better off asking somebody more experienced. Soo... is there something I need to know about them? Or are they not sized for this camera? Any help would be appreciated.