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Night photography (also called nighttime photography) is the capturing of images outdoors between dusk and dawn. Night photographers generally have a choice between using artificial lighting and using a long exposure , exposing the shot for seconds, minutes, or hours in order to capture enough light to record an image.
Long-exposure photography is often used in a night-time setting, where the lack of light forces longer exposures, if maximum quality is to be retained. Increasing ISO sensitivity allows for shorter exposures, but substantially decreases image quality through reduced dynamic range and higher noise. By leaving the camera's shutter open for an ...
The basic rule is: "For astronomical photos of the Moon's surface, set aperture to f /11 and shutter speed to the [reciprocal of the] ISO film speed [or ISO setting]." [1] With ISO 100, the photographer should set the shutter speed to 1/100 or 1/125 second. (On some cameras, 1/125 second is the available setting nearest to 1/100 second.)
On a sunny day with ISO 400 film / setting and aperture at f /16, set shutter speed to 1 / 400 or 1 / 500 . As with other light readings, shutter speed can be changed as long as the f-number is altered to compensate, e.g. 1 / 250 second at f /11 gives equivalent exposure to 1 / 125 second at f /16 .
On a number of cameras this is the default or standard setting. The camera measures the light intensity in several points in the scene and then combines the results to find the setting for the best exposure. The method of calculation can be different from camera to camera. The actual number of zones used varies widely, from several to over a ...
A demonstration of the effect of exposure in night photography. Longer shutter speeds result in increased exposure. The true characteristic of most photographic emulsions is not actually linear (see sensitometry), but it is close enough over the exposure range of about 1 second to 1/1000 of a second. Outside of this range, it becomes necessary ...
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One then reframes the scene and fully depresses the shutter to take the photo. Unlike other modes, this also sets focus and requires two separate metering/focus stages. A-DEP: [ 3 ] Canon also offers A-DEP ( Automatic DEPth of field ) mode on some cameras, which sets the depth of field and focus in a single shot.