50With approximately 75% of the meter’s sensitivity concentratedon the 12mm-dia. circle within the viewfinder and 25% outsidethis circle, this meter becomes useful in situations where youwant to base exposure on a specific area in the scene. In autoexposure mode, to measure the brightness of the picture’s off-center portion, use the camera’s AE-L/AF-L button (see pages72 and 73).Nearly 100% of the meter’s sensitivity is concentrated on the4mm-dia. area (approx. 1.5% of entire frame) within theselected focus area of the viewfinder. (6mm-dia. area or approx.3.3% of entire frame with focusing screens other than EC-B/EC-E-type.) Use this meter for highly selective exposure control—achieving the best results requires experience.w Center-Weighted Metering e Spot Meteringc In Center-Weighted Metering, the areathat concentrates 75% of the meter’ssensitivity can be changed to 8mm-dia., 15mm-dia.,20mm-dia. circle or average on entire viewfinder usingCustom Setting #14. See page 89.When Spot Metering is selected, shifting focus area alsoshifts Spot Metering area to corresponding position (withEC-B/EC-E focusing screen only).P400 (E) 02.12.27 6:42 PM Page 50
