Canon EOS Rebel T4i Instruction Manual - Page 116

q Changing the Metering ModeN e Center-weighted average metering The brightness is metered at the image center and then averaged for the entire scene. This metering mode is for advanced users. Metering Range During Live View Shooting With q (evaluative metering) and e (center-weighted average metering), the metering range is almost the same as with viewfinder shooting. With w (partial metering) and r (spot metering), the metering range slightly differs from viewfinder shooting. The approximate metering ranges are as shown below: Partial metering Spot metering * The figures show when [Grid 2 m] is set. The metering ranges are not displayed on the LCD monitor. With q (evaluative metering) during viewfinder shooting, the exposure setting will be locked when you press the shutter button halfway and focus is achieved. With w (partial metering), r (spot metering), and e (centerweighted average metering), exposure setting is set at the moment of exposure. (The exposure setting is not locked when you press the shutter button halfway.) During Live View shooting, the exposure setting is set at the moment of exposure, regardless of the metering mode setting. 116