Topic: Focusing Screen Replacement?

[Skorj]

I know a number of us have previously discussed focusing screens, and good sources of upgrades and replacements. Following Sean's comments my Buroni wasn't as bright in some lighting conditions as other screens, I ordered a replacement and made the two or three simple steps to replace.

A great deal better, and with the source being particularly reliable and accurate the job was easy and the results pleasing. Details here: Buroni Focusing Screen Upgrade.



If you operate a focusing screen device, a thoroughly recommended, and easy step. See ya! Skj.

[Urban Hafner]

So how about the Yashica Mat? I thought it had a reasonably bright screen, but compared to the Primo Jr it's very dark. Would replacing the screen help here? And I guess cleaning the finder, too?

Urban

[Skorj]

So how about the Yashica Mat? I thought it had a reasonably bright screen, but compared to the Primo Jr it's very dark. Would replacing the screen help here? And I guess cleaning the finder, too?

Yup. I would pull apart, clean, and consider a replacement screen. Note to though, the brightness of a focusing screen is also a function of the Fresnel lens behind the screen.

Some screen functions do not have a Fresnel though, and easily benefit from a ground glass replacement. Skj.

[moominsean]

the yashica has a rectangular glass, though, so it would have to be custom cut.

[Urban Hafner]

the yashica has a rectangular glass, though, so it would have to be custom cut.

That's true. I might go for one from Rick Oleson. That seems to be the recommended choice from what I found on the net.

Urban

[Francois]

There's always this option
DIY

Or ripping apart an old 8mm film editor. Their screens have a fresnel lens on the back most of the time.

[chris_n]

my rb67 screen is a bit dusty and could use a good cleaning, however i'm not sure how fragile these are as the manual says to not even clean it with a cloth but to just use a blower.

what do you guys recommend?  i have SP lens cleaner which is methanol based --i use this for cleaning lenses and i also have lens specific cleaning papers.

would any of this work?

[Terry]

Chris,
It could be made of plastic--or glass with some kind of coating on it.  Without knowing what its composition is you can't know what might damage it.  I'd do a test on a bit of a corner or some part near the edge that won't do any serious harm to the screen's functionality.

[Francois]

Try air in a can. This stuff is powerful and can blast almost any dust out.