Canon EOS-1Ds Mark III EOS-1Ds Mark III Instruction Manual - Page 90

q Metering Modes 1 Press the button. (9) 2 Select the metering mode. While looking at the top LCD panel, turn the dial. q: Evaluative metering w: Partial metering r: Spot metering e: Center-weighted average metering q Evaluative metering This is the camera's standard metering mode suited for most subjects even under backlit conditions. After detecting the subject's position in the viewfinder, the brightness, background, front and back lighting conditions, and other complex lighting elements, the camera sets the proper exposure for the main subject. w Partial metering Effective when the background is much brighter than the subject due to backlighting, etc. The metering is weighted at the center covering about 8.5% of the viewfinder area. r Spot metering This is for metering a specific part of the subject or scene. The metering is weighted at the center covering about 2.4% of the viewfinder area. When C.Fn I -7 [Spot meter. link to AF point] is set to [1:Enable (use active AF point)], spot metering can be linked to the 19 (or 9 outer or inner points) AF points. (p.160) 90