Originally posted by virgilr Uli: do you find the chinese screen affects AF or metering in any way? I want to be able to hand the camera off to my wife with AF lenses when need be.
Also, not sure if the K10D version of their screen at virtual village will fit the k100D (I have a super)- from what I have seen, the K100D screen has different dimensions than the 10D and the iST series.
AF is not affected in any way, since the AF-unit is below the mirror in the base plate of the body. Only the exposure metering is done on the focus screen. And exactly here is the only problem with the alternate screens: The matrix and integral metering is not affected, but the spot metering get a serious impact from the wedge in the split screen. When the split image dims on closed aperture, the metering is way off. You can get extreme overexposure because the wedge gets dark. But this is the area that is used for spot metering.
Everything else is imho better. Even the matting of the full screen is better for viewing the "focus jump", when the target gets in focus. The normal screens are optimized for brightness, not for the "focus jump". As far as i know, the focusing screens are interchangeable between all Pentax
DSLRs.