For a few days now, as the happy owner of a 1990 Zenit Automat in excellent condition (well, its Helios is a patch of meadow mushrooms, but dismantling it and cleaning the lenses is done in a few minutes, while the exposure meter is being calibrated...), I have been asking myself, and I ask those who are much more knowledgeable than me: which Soviet lenses were produced with a Pentax mount?
