Traditional Culture Encyclopedia - Photography major - About the photographic perspective?

About the photographic perspective?

The focal length of the lens is10mm16mm 25mm 50mm 75mm100mm150mm.

The viewing angle is 98 65 45 23 14 12 8.

The binocular viewing angle of human is170, and the focusing viewing angle is 45, which is equivalent to the 25mm lens of a camera.

The angle of view determines two factors: the focal length of the lens and the imaging area. The above data is the corresponding relationship between the viewing angle and focal length of a camera with a diagonal of 2/3 inch imaging area.