Quote Originally Posted by BWGirl
Hi!

I've been thinking about getting an eye level prism finder with a meter for my Hassy 500 c/m. There are a couple things that confuse me, though...

* The descriptions of some that I've seen at KEH say that the finder cannot be used with an accu-mat screen... does this mean that I must remove the screen and get a different screen, or just remove the screen?

* I'd like to get one with a meter built in...does anyone have one of these? How does it work? Do you have to remove it to change the back?

Thanks for your help!
The newer Acute-matte screens are brighter than the old screens, thus fooling the exposimeter of metered prisms not calibrated for AM. I think the error is something like one stop. You can't use the cameras without a screen (well, you can but you can't focus!). It is possible to recalibrate the old prisms, I think the best bet is an authorised service man.

You don't have to remove the prism to change backs, but you must remove the back to change viewfinders.