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The Program AE mode lets you concentrate on composing your subject and leave the settings of shutter speed and aperture control to the camera. You only need to focus, whether by AF or manually turning the focusing ring and shoot.With most camera brands offering the Aperture-priority mode as an automatic exposure control, Canon decided early on with the AE-1 camera that selecting the shutter speed was far more important than using aperture control for semi-automation convenience. Aperture is used mainly for controlling the depth-of-field in a given photography situation, whether it is for deeper zone of sharpness or selective focus. Shutter speed, on the other hand, is used to control the movement of the subject and prevent camera shake. Take for example, if you want to record images of children playing, the aperture you select using Aperture-priority AE mode may not be fast enough to freeze their movements. With Shutter-priority AE, you can select a shutter speed fast enough to freeze any movement. Which will you prefer? A photo of a sharp background with moving blurs (the children) or a shot that shows the children clearly with a slightly out-of-focus background - a fast shutter speed requires a larger aperture and limited depth-of-field zone. The camera chooses the aperture setting for you automatically when you use your manual focus Canon or EOS camera in its Shutter-priority AE mode, leaving you free to concentrate on the more important aspects of your creativity efforts. If the shutter speed selected is too fast or too slow that may cause either over- or under-exposed pictures, your Canon camera will warn you in advance so you can alter the setting to a level that will ensure correct exposure, any time you wish. For below and the following pages are an image gallery of how the Tv mode can be used to shoot any subject matter. Shutter-priority AE Gallery Architecture
Candid Photography
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