How to Use Exposure Compensation to Take Control of Your Exposure

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• Aperture Priority Mode – In Aperture Priority mode, exposure compensation changes the shutter speed. Remember that in this mode, you set the aperture and the camera sets a corresponding shutter speed. If you change the Aperture, your camera just sets another corresponding shutter speed, and there is no change in the exposure level. Exposure compensation gives you the ability to change the shutter speed (and the overall exposure value) while staying at the same aperture you originally set.

• Shutter Priority – In Shutter Priority mode, exposure compensation changes the size of your aperture. It is basically the reverse of Aperture Priority mode. You set a shutter speed, and the camera sets a corresponding aperture. Exposure compensation therefore changes the exposure by allowing you to change that aperture size.