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On others, including many Digital SLR cameras, bulb is typically available from the manual exposure mode and—rarely—also from shutter priority mode. [4] When set to bulb, generally on the "M" or manual setting of the camera, the shutter will stay open as long as the shutter release button (or shutter release cable or remote) remains depressed.
An amber (light brown) safelight for use with certain black-and-white photographic papers. A safelight is a light source suitable for use in a photographic darkroom. It provides illumination only from parts of the visible spectrum to which the photographic material in use is nearly, or completely insensitive.
A typical problem with cameras using built-in flash units is the low intensity of the flash; the level of light produced will often not suffice for good pictures at distances of over 3 metres (10 ft) or so. Dark, murky pictures with excessive image noise or "grain" will result. In order to get good flash pictures with simple cameras, it is ...
Butterfly lighting, named for the butterfly-shaped shadow under the nose, the butterfly lighting pattern is created when the light is above and in line with the camera. Split lighting, where the main light is placed off to the side of the subject at about 90 degrees and positioned at face height or slightly above. The subject looks straight on ...
A light leak is a hole or gap in the body of a camera, or other optical instrument, where light is able to "leak" into the normally light-tight chamber, exposing the film or sensor with extra light. This light is diffused, although parts within the camera may cast shadows or reflect it in a particular way. For most purposes this is considered a ...
Alternatively, a tally light can be a separate device mounted on the camera body, lens, or tripod, but not connected to the camera electronically. In some (mainly non-studio) cameras, the tally light is implemented as a special UI element displayed on the screen (e.g. red outline around the frame).
Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
Lytro Illum 2nd generation light field camera Front and back of a Lytro, the first consumer light field camera, showing the front lens and LCD touchscreen. A light field camera, also known as a plenoptic camera, is a camera that captures information about the light field emanating from a scene; that is, the intensity of light in a scene, and also the precise direction that the light rays are ...