DPR Forum

Welcome to the Friendly Aisles!
DPRF is a photography forum with people from all over the world freely sharing their knowledge and love of photography. Everybody is welcome, from beginners to the experienced professional. Whether it is Medium Format, fullframe, APS-C, MFT or smaller formats. Digital or film. DPRF is a forum for everybody and for every format.
Enjoy this modern, easy to use software. Look also at our Reviews & Gallery!

Focusing screen


New Member
I have a OM-10 which I occaisionally use with a 500mm mirror lens. I understand that the focusing screen cannot be changed like with thre OM-1 etc. Is there anyway of changing the screen or aiding focusing when using telephoto lenses?
I had tried to dis-assemble the OM-10 last year.

I found that if you want to change the focusing screen you have to open the top cover & remove the circuit board & pentaprism first....

It's not an easy job...