I put the old Praktica BCA camera through a thorough test again. Unfortunately, a tripod is needed when shooting with longer lenses. The unknown value of the shutter speed (in the viewfinder there is only something like a traffic light, which does not take into account the used focal length of the lens) was a counterproductive step. Yes, it was not a camera for professionals… nevertheless, an uncertain result could discourage a beginner from taking further pictures. Anyway, now I know how to use this camera.
Praktica BCA, Prakticar 50mm, CZJ 135mm, Praktikar teleconverter 2x, Fomapan F400