C-W (Center-Weighted) Metering
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A center-biased metering method. In high-end Nikon cameras, the bias is variable. In the F5 for example, through Custom Setting 14 the circle of highest meter sensitivity (75%) can be changed from 12mm to 8, 15 or 20mm diameter. Before advanced Matrix Metering was introduced in 1988 on the N8008/F801, much improved over that on the FA, all Nikon cameras with meter had a Center-Weighted one.
