Flash shooting distance range
The distance range over which a flash can effectively provide light. Flash shooting distance range is controlled by the amount of flash output available. Each automatic Speedlight'sflash output varies from maximum duration to minimum duration.
The flash shooting distance range varies with the aperture, film speed , etc.
Flash sync speed
Shutter speed at which the entire film frame is exposed when the flash is fired in flash shooting. The N55's flash sync speed is 1/90 sec. or slower.
Flexible Program
Flexible Program function temporarily shifts an automatically selected shutter speed/aperture combination while maintaining correct exposure. That is, the desired shutter speed or aperture can be selected in
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The | |
divided by the effective aperture opening. The standard numbers for calibration are 1, | |
1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32, etc. |
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The smallest |
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minimum aperture. Lenses with large maximum apertures (smaller |
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lenses that allow photographers to use faster shutter speeds in dim light. Lenses with |
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smaller maximum apertures (larger |
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available light but are also lighter and smaller than faster lenses. With some zoom |
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lenses, aperture varies depending on the focal length setting. |
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Focal length |
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The distance from the principal point to the focal point. In |
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with a focal length of approx. 50mm are called normal or standard lenses. Lenses with a |
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focal length less than approx. 35mm are called wideangle lenses, and lenses with a focal |
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length more than approx. 85mm are called telephoto lenses. Lenses which allow the user |
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to continuously vary the focal length without changing focus are called zoom lenses. |
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