Setting exposure compensation of EOS REBEL T2i / EOS 550D

What is exposure?

Exposure adjustments are a process in which the amount of light exposed to an image sensor is adjusted by the aperture value or the shutter speed to accommodate different levels of subject brightness. Correct exposure refers to optimal exposure for a subject, whereas underexposure is insufficient exposure and overexposure is excessive exposure.

Setting Exposure Compensation

If the mode dial of this camera is set to a mode other than ⋖M⋗, the camera automatically sets the appropriate exposure value. If you want to adjust the exposure value that is set by the camera, you can use the exposure compensation setting.

Exposure compensation can increase (brighter) or decrease (darker) the standard exposure set by the camera. You can adjust the value if the mode dial is set to ⋖ P/Tv/Av/A-DEP ⋗.

Caution

Caution

To compensate the exposure value, follow the instructions below.

1. Set the power switch to ⋖ON⋗.

2. Set the Mode Dial to one of the ⋖ P/Tv/Av/A-DEP ⋗ modes.

3. While holding down the ⋖ ⋗ button, turn the ⋖Main Dial⋗ to set the mode.

Turn the dial to the left to make the flash exposure darker, and turn to the right to make it brighter.

5. Press the shutter button to take the picture.

To cancel exposure compensation, set the exposure compensation amount back to ⋖ ⋗.