This is a test using an old Pentax 50mm on my new Sony AR7ii flash whizz bang digital camera.
Using this lens with a cheap adaptor, I was very very pleasantly surprised. I've been trying a few other old lenses I've got stashed in the cupboard. I even had almost acceptable results from an old Russian lens and a mold infested elderly Zeiss Tessar. As soon as time permits, Im going to go for a wander and give them a good go.