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2. Exposure (photography) - Wikipedia

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

   Exposure is a combination of the length of time and the illuminance at the photosensitive material. Exposure time is controlled in a camera by shutter speed, and the illuminance depends on the lens aperture and the scene luminance. Slower shutter speeds (exposing the medium for a longer period of time), greater lens apertures (admitting more ...

3. Long-exposure photography - Wikipedia

   en.wikipedia.org/wiki/Long-exposure_photography

   Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements. Long-exposure photography captures one element that conventional photography does not: an extended period of time.

4. Looney 11 rule - Wikipedia

   en.wikipedia.org/wiki/Looney_11_rule

   Looney 11 exposure of the Moon - 1/200 second, ISO 200, f /11. In lunar photography, the Looney 11 rule (also known as the Looney f /11 rule) is a method of estimating correct exposures without a light meter. For daylight photography, there is a similar rule called the Sunny 16 rule.

5. Sunny 16 rule - Wikipedia

   en.wikipedia.org/wiki/Sunny_16_rule

   The basic rule is, "On a sunny day set aperture to f /16 and shutter speed to the [reciprocal of the] ISO film speed [or ISO setting] for a subject in direct sunlight." [1] In simplest terms, bright sun = f:16 @ 1/film-speed-number (aperture and shutter speed, respectively).

6. Night photography - Wikipedia

   en.wikipedia.org/wiki/Night_photography

   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.

7. Metering mode - Wikipedia

   en.wikipedia.org/wiki/Metering_mode

   In photography, the metering mode refers to the way in which a camera determines exposure. Cameras generally allow the user to select between spot, center-weighted average, or multi-zone metering modes. The different metering modes allow the user to select the most appropriate one for use in a variety of lighting conditions.