I do not know much about this subject, but I have read on NS and other blogs that for the money this is the way to go when filming. I need a little input on what to purchase, how much to pay, what adapters are needed for a Canon EOS, and how old they can be? Thanks
Helios primes are, from what i hear, the best bang for your buck. They are m42 screw mount (adapters can be found for like $10) and are russian copies of carl zeiss primes from the 70's. Search ebay for them, you can probably find something close to 50mm f/1.8 for like $30-60, and I think there are some 85 and 24/28 mm as well. They are unbelievably crisp
Make sure when you are looking at older, non eos mount primes that they have manual aperture blades, you don't want to get stuck with a lens that doesnt have much flexibility. It's a no brainer, but sometimes people forget
if youre down to drop around $100, look for a Pentax SMC 1.4... amazing lens with incredible dof and great colors. for a little bit cheaper, you can find Pentax Super Takumar 1.4 with a radioactive coating (non-harmful) that has a great look and build, but a bit of a "sepia" tone to it.