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Results for “Aperture”

5 terms

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Aperture Exposure & Metering f-stops (EV) The adjustable opening inside a lens that controls how much light passes through to the sensor, and with it the depth of field. N = f / D Aperture Blades Optics, Lenses & Filters count The overlapping leaves inside a lens that form the iris, whose number and shape determine the geometry of the opening. Aperture Priority Exposure & Metering A semi-automatic mode, marked A or Av, in which the photographer sets aperture and ISO while the camera chooses shutter speed. Aspherical Element Optics, Lenses & Filters count A lens element whose surface departs from a simple sphere, correcting aberrations that spherical glass cannot. Auto ISO Exposure & Metering ISO A camera mode that lets the body select sensitivity automatically within limits the photographer sets, usually with a minimum shutter speed.