Let me explain this a little more clearly than the title would allow. I want a camera from a company with a lot of compatibility. A lot of companies (like Pentax and Sony/Minolta) will let you use old film lenses on their new cameras. This is a must for me (sorry, Olympus), as I am poor and want something to learn with. With that being said, everyone says, "Pentax has really cheap lenses you can buy!" But I want ones that will be compatible with all the new bells and whistles, like TTL and stuff like that. And I can't find out if these old cheap Pentax lenses are capable of doing this. I was under the impression that the old cheap Pentax primes people talk about are manuals. And I would really like one that is automatic OR manual, depending on my mood Anyway, I want to know what company has the least expensive lenses (either new or old) that are fully integratible (I made up a new word) with the new systems. I was thinking Sony or Pentax, but don't know this for sure. Either way, help would be GREATLY appreciated!