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  2. 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 ...

  3. Shutter speed - Wikipedia

    en.wikipedia.org/wiki/Shutter_speed

    For example, f /8 lets four times more light into the camera as f /16 does. A shutter speed of 1 ⁄ 50 s with an f /4 aperture gives the same exposure value as a 1 ⁄ 100 s shutter speed with an f /2.8 aperture, and also the same exposure value as a 1 ⁄ 200 s shutter speed with an f /2 aperture, or 1 ⁄ 25 s at f /5.6. [citation needed]

  4. Exposure value - Wikipedia

    en.wikipedia.org/wiki/Exposure_value

    N is the f-number; and; t is the exposure time ("shutter speed") in seconds [2] The second line is just applying the quotient identity of logarithms to the first line. EV 0 corresponds to an exposure time of 1 s and an aperture of f /1.0. If the EV is known, it can be used to select combinations of exposure time and f-number, as shown in Table 1.

  5. Sunny 16 rule - Wikipedia

    en.wikipedia.org/wiki/Sunny_16_rule

    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.

  6. 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.

  7. List of abbreviations in photography - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    Guide number. A value indicating the power of an electronic flash apparatus, and used to estimate exposure. GN = distance × f-number. One needs to specify the film or sensor ISO speed, and it is conventional to quote for ISO 100/21°. The distance can be in feet or in metres, the units to be specified. [4] GND: Graduated neutral density. A ...

  8. Lens speed - Wikipedia

    en.wikipedia.org/wiki/Lens_speed

    Lens speed is the maximum aperture diameter, or minimum f-number, of a photographic lens. A lens with a larger than average maximum aperture (that is, a smaller minimum f-number) is called a "fast lens" because it can achieve the same exposure as an average lens with a faster shutter speed. Conversely, a smaller maximum aperture (larger minimum ...

  9. Shutter (photography) - Wikipedia

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

    The life-expectancy of a mechanical shutter is often expressed as a number of shutter cycles. Most digital cameras save the shutter cycle information along with the photos, which contains valuable information such as shutter speed, aperture, and shutter count. [12] There are multiple websites and applications to access the EXIF data.