What brands of screw mount lenses work with Mamiya 35mm. TL/DTL series. I know Sears and J.C. Penney do. Others? Currently have 2.8/135 mm. What would you recommend for overall shooting in an educational environment?
Mamiya used the 42mm screw mount. This mount originated with Praktica. Pentax picked up on it a popularized it so much it became known as the Pentax screw mount, so there are a bunch of fine old Pentax lenses out there you can use. This same mount was also used by Chinon, Cosina, Ricoh and Zenit. Third party lens makers like Vivitar and Soligor also made lenses in this mount. I just did an e-bay search on "Pentax screw mount" and got 58 items to come up. Happy Hunting.