The EOS Rebel T2i features Canon's newest Dual-layer sensor, with 63 zones. By measuring not only the amount of light, but also taking into account color and luminosity, this new system delivers a very high level of accuracy for better results every time. Since the metering sensor has a color measurement function, exposure errors and focus errors caused by different light sources are minimized; the EOS Rebel T2i gives stable exposure from shot to shot in situations where light changes, such as sports on a cloudy day, or indoor holiday scenes.
Additionally, the EOS Rebel T2i has a high-precision, 9-point AF system utilizing a high-precision, f/2.8 cross-type center point. The 9-point AF system uses both normal and high-precision focus depending on the aperture and available light. The 9 focus points can be chosen automatically or manually selected.