I have some old lenses that I have collected over the years. From aircraft cameras, News paper print cameras, etc. Many of them have Focus in inches.
I have a 600D camera and have sent for adaptors. Next I want to make tubes to fit the lenses to the adaptors. I will need a way of blacking out the inside of the tubes, and think of matt spray. I am a bit wary as this paint will be directly connected to the innerds of the camera, screen etc.
Does anyone have experience in this type of thing please?