Инструкция для Jupiter 12 35 mm f/ 2.8 Lens

 
Although this worked, I started to look for a more accurate way and one easier to see. I now use my 
Bessa T body with another focus screen lightly taped to the film rails. I then lock the shutter open 
on B using a cable release. 
 

  

 
If you need to do a service do this first. First you will need to check the infinity focus. I do this 
indoors by using my Pentax LX with a 2x magnifying finder and a 200mm F2.5 lens. (Using this 
method the longer the focal length and the faster the aperture of the SLR lens and the more accurate 
it will be. Set up both cameras on tripods facing each other with both lens set if infinity.