Гелиос

Hey Guys! I’m new to the whole anamorphic game, but I have a panavision superama 16mm anamorphic projector lens and I wonder if i could use it, and if so What My taking lens should be. I tried with a Konica 40mm lens ( because the front lens element is small) but i still get a lot of vignetting. Also the rear lens element is out ortho projector lens and i wonder if that could be the problem? Thanks in advance! Гелиос