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100 in 100: Metering modes: Tv, Av, or M?

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100 in 100: Metering modes: Tv, Av, or M?

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October 13, 2008

Day 32: Shutter priority—aka Time Value, hence the abbreviation—mode is ideal for photographing subjects in motion, such as sports and action photography. Selecting Tv on the camera’s Mode Dial means an aperture is automatically selected to match the shutter speed chosen by the user. Unlike Program mode, make sure that the available aperture range is sufficient to provide correct exposure at the selected shutter speed. If you don’t, most SLRs will provide some kind of indication and if the selected shutter speed is too fast or too slow for an adequate exposure you’ll have to pick a different shutter speed...(Read it all!)

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