I have the Beattie screen in an LX and PZ1 and notice no difference in exposure.. Vic
It's not much; I believe it's around 1/3 stop in centre-weighted (and who knows what using multi-segment metering). If you're using print film you'll never notice the difference. Even on slide film (with far less latitude) you won't usually have a problem, simply because erring on the side of underexposure with slides is a lot better than going in the other direction. These figures are for the PZ-1p screens; I don't know if the PZ-1 differs.
