Canon EOS Rebel T2i EOS REBEL T2i / EOS 550D Instruction Manual - Page 86

q Changing the Metering ModeN The metering mode measures the subject's brightness to determine the correct exposure. Normally, evaluative metering is recommended. 1 Select [Metering mode]. Under the [2] tab, select [Metering mode], then press . 2 Set the metering mode. Press the key to select the metering mode, then press . q Evaluative metering This is an all-around metering mode suited for portraits and even backlit subjects. The camera sets the exposure automatically to suit the scene. This metering mode is set automatically in Basic Zone modes. w Partial metering Effective when the background is much brighter than the subject due to backlighting, etc. The gray area in the figure is where the brightness is metered to obtain the standard exposure. r Spot metering This is for metering a specific part of the subject or scene. The gray area in the left figure is where the brightness is metered to obtain the standard exposure. This metering mode is for advanced users. e Center-weighted average metering The brightness is metered at the center and then averaged for the entire scene. This metering mode is for advanced users. 86