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A field of view. In first person video games, the field of view or field of vision (abbreviated FOV) is the extent of the observable game world that is seen on the display at any given moment. It is typically measured as an angle, although whether this angle is the horizontal, vertical, or diagonal component of the field of view varies from ...
Angular field of view is typically specified in degrees, while linear field of view is a ratio of lengths. For example, binoculars with a 5.8 degree (angular) field of view might be advertised as having a (linear) field of view of 102 mm per meter. As long as the FOV is less than about 10 degrees or so, the following approximation formulas ...
In the optical instrumentation industry the term field of view (FOV) is most often used, though the measurements are still expressed as angles. [8] Optical tests are commonly used for measuring the FOV of UV, visible, and infrared (wavelengths about 0.1–20 μm in the electromagnetic spectrum) sensors and cameras.
The funny thing is that knowing your Angle of View is relatively useless in practical photography, which is probably why Field of View is the more familiar term. Field of View means simply how much of this scene is included in my picture. A larger FOV can be obtained by either increasing the AOV, or increasing the camera-object distance.
This example shows both vignetting and restricted field of view (FOV). Here a "point-and-shoot camera" is used together with a microscope to create this image. Pronounced vignetting (fall off in brightness towards the edge) is visible as the optical system is not well adapted.
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Horizontal, vertical and diagonal field of view. It has been demonstrated that viewing a display that occupies a greater visual angle (also referred to as field of view) increases the feeling of presence. [6] More importantly, the wider the visual angle (up to a plateau at approximately 80 degrees), the greater the feeling of presence. [8] [9]
Matrox maintains a compatibility list of games and provides a Surround Gaming Utility to automatically adjust the game settings to run on three monitors. Some problems remain with distortions to the user interface and geometric distortions at the edges of the display since the games weren't written with such a wide FOV in mind.