Pressing and holding the Aperture/Exposure Compensation (AV) button on the back of the camera and turning the Main dial to adjust the aperture. You can also set the exposure above (to overexpose) or below (to underexpose) the meteredanbsp;...
|Title||:||Canon EOS Rebel T3i / 600D Digital Field Guide|
|Author||:||Charlotte K. Lowrie|
|Publisher||:||John Wiley & Sons - 2011-04-22|