u/Distinct_Music2846

Image 1 — How should I clean this and can it go in an ultrasonic cleaner?
Image 2 — How should I clean this and can it go in an ultrasonic cleaner?
Image 3 — How should I clean this and can it go in an ultrasonic cleaner?

How should I clean this and can it go in an ultrasonic cleaner?

I inherited an exacta vx, the focusing screen in the viewfinder has been nasty for decades. But because it is a family heirloom, I don't want to replace anything that isn't too broken. And I really don't want to break anything on the camera. I'm too afraid to use a needle to pick at the. I really don't know the proper way to do this. It appears to be just made of uncoated optical glass... I think.

u/Distinct_Music2846 — 4 days ago