I have an old Pentax H model I bought in Japan in 1962. Works great still today. Have never had a single bit of problem with it. With the camera body I bought 3 lenses. A 50mm, 135mm and 250mm. The 50 and 135 are auto/manuel. My question is, can these lenses be used on todays digital SLR type cameras? The are the old screw mount lenses. My wife wants a digital camera since we have a computer, grown children with digital camers and grandkids all using the internet and emailing pictures so easily from their cameras. I guess I have to step into the 21st century. I'm afraid if I go digital my old H model will collect dust. So I'm hoping I can salvage the lenses, maybe sell the camera body and leather camera bag that goes with it. This is probably a simply question for the experts in here. Thank you in advance.