Dear petronius,
I just picked up an Industar-69 for use with a Bessa L. It had the distance scale flipped so zone focusing is easy and supposedly it was adjusted to focus to infinity on LTM39 mount cameras.
I should be done the roll of film in the camera in a few days, so we'll see what we get. I know it's not digital, but I wanted an LTM mount lens wider than 35mm and I didn't want to spend twice what I have wrapped up combined in the camera and lens for just a lens. For $ 79.99 plus $ 20.00 shipping from the Ukraine it was gamble I could afford.
Regards,
Tim Murphy
Harrisburg PA 🙂