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Exposure is further controlled in each of the above modes with an independent setting for: Ev: Exposure value enables an increase/decrease in image exposure compensation to make the resulting image brighter/darker, typically selectable in steps of whole or partial exposure "stops" (discrete widening/tightening of the aperture). Many cameras ...
The 1964 ASA standard for automatic exposure controls for cameras, ASA PH2.15-1964, took the same approach, and also used the more descriptive term camera exposure settings. Common practice among photographers is nonetheless to use "exposure" to refer to camera settings as well as to photometric exposure.
Sunlit subject shot on a digital camera set to ISO 100, exposed at f/8 at 1/400 second which is the same exposure value as f/16 for 1/100 second, the recommended "sunny 16" exposure In photography, the sunny 16 rule (also known as the sunny f /16 rule ) is a method of estimating correct daylight exposures without a light meter .
Exposure is a combination of the length of time and the illuminance at the photosensitive material. Exposure time is controlled in a camera by shutter speed, and the illuminance depends on the lens aperture and the scene luminance. Slower shutter speeds (exposing the medium for a longer period of time), greater lens apertures (admitting more ...
Camera exposure compensation is commonly stated in terms of EV units; 1 EV is equal to one exposure step (or stop), corresponding to a doubling of exposure. Exposure can be adjusted by changing either the lens aperture or the exposure time; which one is changed usually depends on the camera's exposure mode.
Automatic exposure lock. Technology for holding an exposure setting from one scene to another. [4] AF: Autofocus. The lens is focused automatically by means of the camera's hardware and firmware, to obtain optimum sharpness of an image. [4] AF-L or AFL: Autofocus lock. Locks a particular focus setting, preventing refocusing if the scene changes ...
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[20] [15] [11] [14] However, shorter exposure times require more light to produce a properly exposed image, so shortening the exposure time is not always possible. Like aperture settings, exposure times increment in powers of two. The two settings determine the exposure value (EV), a measure of how much light is recorded during the exposure.