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  2. Shutter speed - Wikipedia

    en.wikipedia.org/wiki/Shutter_speed

    The shutter speed dial of a Nikkormat EL Slow shutter speed combined with panning the camera can achieve a motion blur for moving objects. In photography, shutter speed or exposure time is the length of time that the film or digital sensor inside the camera is exposed to light (that is, when the camera's shutter is open) when taking a ...

  3. Exposure value - Wikipedia

    en.wikipedia.org/wiki/Exposure_value

    Extended exposure time of 26 seconds. Exposure value is a base-2 logarithmic scale defined by (Ray 2000, 318): = ⁡ = ⁡ ⁡, where N is the f-number; and; t is the exposure time ("shutter speed") in seconds [2]

  4. Exposure (photography) - Wikipedia

    en.wikipedia.org/wiki/Exposure_(photography)

    As f /5.6 is 3 stops "faster" than f /16, with each stop meaning double the amount of light, a new shutter speed of (1/125)/(2·2·2) = 1/1000 s is needed. Once the photographer has determined the exposure, aperture stops can be traded for halvings or doublings of speed, within limits.

  5. Sunny 16 rule - Wikipedia

    en.wikipedia.org/wiki/Sunny_16_rule

    On a sunny day at ISO 100 ("100 speed film"), the aperture is set to f /16 and the shutter speed (i.e. exposure time) to ⁠ 1 / 100 ⁠ or ⁠ 1 / 125 ⁠ [2] seconds (on some cameras ⁠ 1 / 125 ⁠ second is the closest available setting to ⁠ 1 / 100 ⁠ second). On a sunny day at ISO 200 and aperture at f /16, set shutter speed to ⁠ 1 / ...

  6. f-number - Wikipedia

    en.wikipedia.org/wiki/F-number

    An example of the use of f-numbers in photography is the sunny 16 rule: an approximately correct exposure will be obtained on a sunny day by using an aperture of f /16 and the shutter speed closest to the reciprocal of the ISO speed of the film; for example, using ISO 200 film, an aperture of f /16 and a shutter speed of 1 ⁄ 200 second. The f ...

  7. APEX system - Wikipedia

    en.wikipedia.org/wiki/APEX_system

    Use of the scale on such cameras is discussed briefly by Adams (1981, 39). Modern cameras no longer display exposure values as such, but continue to offer exposure modes, which support users in employing the concept of counter-adjusting shutter speed and aperture at a fixed point of exposure.

  8. Guide number - Wikipedia

    en.wikipedia.org/wiki/Guide_number

    Selecting any shutter speed faster than the camera's rated X‑sync speed, which is often between 1 / 60 th and 1 / 200 th of a second (from as long as 16.7 milliseconds to as little as 5.0 milliseconds) causes the shutter curtain to begin wiping closed across the film or sensor before the flash has extinguished. When this happens, an ...

  9. In photography, shutter speed is a common term used to discuss exposure time, the effective length of time a camera's shutter is open. Slower shutter speeds are often selected to suggest movement in a still photograph of a moving subject. Fast shutter speeds freeze a moving subject on photograph. Reason