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The Nikon SB-500 is a lightweight and very compact shoe-mount flash unit with coverage for a 24 mm lens on an FX camera or a 16 mm lens on DX camera and combined with 100 lux LED for video light, powered by only two AA-size batteries. SB-500 is a very capable flash with a variable angle 'bounce' head (up to 90°) and rotates 180° for soft ...
A full-power flash from a modern built-in or hot shoe mounted electronic flash has a typical duration of about 1ms, or a little less, so the minimum possible exposure time for even exposure across the sensor with a full-power flash is about 2.4 ms + 1.0 ms = 3.4 ms, corresponding to a shutter speed of about 1 ⁄ 290 s. However some time is ...
Flash bracketing is a technique of working with electronic flash, especially when used as fill flash in combination with existing light, maintaining the overall amount of exposure. The amount of light provided by the flash is varied in a bracketed series in order to find the most pleasing combination of ambient light and fill flash.
The first form of digital TTL by Nikon, called "D-TTL", was used in a few early models. Since then, the superior "i-TTL" system has been used. [3] [4] When using front-curtain flash (when the flash fires immediately after the shutter opens), the preflashes and main flash appear as one to the human eye, since there is very little time between them.
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The flash unit sets up a circuit between shoe and contact—when it is completed by the camera, the flash fires. In addition to the central contact point, many cameras have additional metal contacts within the "U" of the hot shoe. These are proprietary connectors that allow for more communication between the camera and a "dedicated flash".