Originally Posted by Randomperson
Bear with me if I sound like an idiot because I'm pretty bad with photography terminology. My dad is looking to buy a digital SLR camera in the 700-800 dollar range. It's important that it works with old lenses. Size isn't really much of a concern. Thanks for the help.
What lens? Pentax is all backwards compatible. Nikon is backwards compatible but the D40 won't focus old lenses. Canon's EOS line is completely comatible with one another but not with its FD lenses.