Инструкция для Jupiter 12 35 mm f/ 2.8 Lens

 
On one of my screens there is a central cross hair. If you are using a plain screen, you may need to 
mark the inside (i.e. on the focal plain) with a pencil. If the lens is set correctly, you should see it in 
focus. If not, move the focus on the RF lens to see if it will focus. If it does, you need to increase 
the shimming between the lens module and the focus module. If not reduce the shims until it is 
correct.  
 

 

Lens needs adjusting 

Infinity focus correct 

  
I was doing this indoors but it can be done outside. Mount the camera on a tripod and point at an 
object at least 3-400 yards away. Check the focus with a lupe. 
 
Now that the distant focus has been set, check the near focus. Indoors I use a painting in the lounge 
with the camera set at about 45 degrees.