Tag Archive for 'Aperture (lens)'

Stop

Old-fashioned term for exposure value or EV. The principle of exposure calculations is that each step in shutter speed or lens aperture corresponds to a doubling or a halving of the light value. In this way it’s easy to play [...]

Program AE

This is the simplest kind of automatic exposure mode and it’s found on every digital camera. What the camera does is measure the light level and then choose a combination of shutter speed and lens aperture which will produce the [...]

F-stop

The lens aperture setting. The numbers may appear arbitrary, but they follow a mathematical sequence where each one lets through half the light of the one before. The sequence is (starting with the largest aperture) f1.0, f1.4, f2.0, f2.8, f4.0, [...]

Exposure

Choosing a suitable shutter speed and aperture. Exposure technique is an art which relies on the effect that the photographer is trying to achieve – something that the camera, for all its sophisticated automated exposure systems, can’t possibly know. Light-toned [...]

Depth of field

depthoffield01

Depth of field is the near-to-far sharpness in a photo. When you focus on an object, in theory only that object will be perfectly sharp, and anything in the foreground or background will be progressively more blurred depending on its [...]

Aperture (lens)

Variable hole in the lens used to control exposure. The size of this hole is adjusted to control the amount of light – along with shutter speed, this is how the exposure is controlled. Lens apertures have standard values which apply [...]