Even from the sound, it felt like the shutter speeds weren't working as they should. But considering that the photo testing took place in the evening, I decided to use black-and-white Foma 400 ISO film.
The shutter speeds were longer than the nominal values, so the film was overexposed and often had some "shake". I developed the film with Microphen.
But still, I have a feeling that the graininess could have been less.
As for how this tired lens renders images - you can feel the full weight of the Soviet photo industry’s struggle.
See for yourself what turned out.