8 compensate your exposure
Understand how to retain tone and detail in the important parts of your shot
Always Think about whether you need EV compensation. White flowers and snow needs to look white; black cats in coal cellars need to look dark. It’s not about metering patterns or exposure lock or anything else the camera can do – the camera can’t interpret your subject’s intrinsic brightness, only you can. If you’re shooting in Av, Tv or Manual modes, apply positive (brighter) or negative (darker) exposure compensation using the top dial on cameras like the 77D, 7D Mk II, and 6D Mk II; or, on cameras like the 200D and 800D, press the Av +/- button and then use the top dial.
Note that if you’re shooting in Av mode, exposure compensation will adjust the shutter speed to make your images brighter or dark; if you’re in Tv mode, it will adjust your aperture to make your images brighter or darker.
It’s not about metering patterns or exposure lock – the camera can’t interpret your subject’s intrinsic brightness