The picture angle is measured diagonally
The example below shows the difference between two focal lengths, 30mm and 100mm.
30mm wide angle ...
Picture angle
Picture angle can be thought as the view that the lens produces, i.e. the angle of the image from the scene and the value is expressed in degree.
Picture angle
The angle of coverage of a lens usually measured across the diagonal of the picture frame; varies with focal length: the longer the focal length, the narrower the picture angle; the shorter the focal length, ...
The picture angle produced by these lenses only measures 180 degrees when measured from corner to corner: these have a 180° diagonal angle of view, while the horizontal and vertical angles of view will be smaller; ...
Photolamp (3400K).
Photographic lamp giving more light than a normal lamp of the same wattage, at the expense of filament life. Often referred to by the trade mark Photo Hood. Are used with type A colour films.
Picture angle ...
Angle of View See Picture Angle. Anti-Aliasing An optical process that samples the edges of an image to fill in the missing areas that cause a jagged appearance.
Perspective has a large influence on the way an image looks. It is dependent on picture angle and focal length used. Perspective changes the way an object looks in size and distance to the camera.
FX format, on the other hand, is ideal for those seeking the same picture angle and picture blur as 35mm (135) format cameras, with higher sensitivity and wider dynamic range.
placed it between the softbox (1) and the object, and illuminated it separately (10). As a result, I got a perfect contour all around the chrome tap. This technique becomes easier if you choose a long focal length and a narrow picture angle (α).
 See also: Focal, Image, Photograph, Focal length, Camera
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