Boris wrote: I think that potentially you could fit ZX-L with other focusing screens, such as that of MZ-M, which is known to have split image, etc. However, I am afraid that in such a case you would totally lose spot metering. Notice, that if you take off the lens and point the camera on the well lit window and look in the viewfinder you'd see a small circle just in the middle of the screen. AFAIK, this is the spot of spot metering. If you remove default focusing screen and replace it with split screen, you're going to lose spot metering.
All that the spot-metering circle on the focusing screen does is to indicate the area being metered when spot-metering is selected. If you're using a screen without that circle, spot metering will still work, but you'll have to guess or estimate the precise area being metered. Pat White
