It measures 25.1×16.7mm with an aspect ratio of 3:2. Advanced Photo System type-C is a format for digital image sensors that is roughly the same dimensions as the Advanced Photo System (APS) film negative in its Classic (C) format.

While APEX failed to become a fundamental standard in the camera industry, its use of Av and Tv to refer to aperture and shutter speed live on in modern cameras.ĪPS-C. A system for simple exposure computation first proposed in the 1960 ASA standard regarding monochrome film speed. Short for Additive System of Photographic Exposure. A camera exposure mode in which the photographer sets the aperture and the camera automatically sets the shutter speed in order to achieve optimal exposure based on lighting conditions detected by the built-in light meter.ĪPEX. Usually measured and expressed as a number known as the f-number of f-stop.Īperture Priority. This is one of the fundamental settings for controlling exposure and a component of the Exposure Triangle. The opening of the diaphragm within a lens that light passes through on its way into a camera. This can include both natural light from the Sun as well as artificial light already illuminating a location.Īngle of View (AOV). Any light in a scene that the photographer did not introduce artificially. Autofocus lock is a camera feature that allows a photographer to freeze the current focus point of the lens, enabling them to shoot a photo at any time independent of whether the camera determines it has achieved correct focus.Īmbient Light.

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