Originally posted by carrrlangas I thought focusing screens had nothing to do with exposure metering. Is this incorrect?
Because the metering sensor is located above the screen, it can affect metering. It depends on the screen, metering mode, and the situation. For example, if you use spot metering on the center with an aperture that has the split-prism screen close to 'blackout', you can get wildly random results. Some of the split-prism screens I have tried were dimmer than others; I could see how that might cause the camera to consistently over-expose.