I recently bought a beautiful Hasselblad kit with a PME (metered) finder. It came with an older split image screen. My other Hasselblad has the Acute-Matte screen, which is clearly brighter. Although I have not tested the difference in metering between the screens, I am sure there will be a different in readings. Which screen is best to use with the PME finder and should one do an exposure test using a grey card? Many thanks.