The formula that it implements is FOV = 2 arctan (x / (2 f)), where x is the diagonal of the film. The FOV is measured across the frames diagonal, and is therefore smaller across the horizonal dimension, and even smaller across the vertical dimension.
How is a camera field of view determined?
The most direct way to determine the field of view is to measure it directly, typically with a tape measure. For example, point the camera at a wall. Looking through the camera (viewfinder or monitor), measure horizontally across the entire field of view right at the edge of visibility, to obtain the width.
What size is a 1/2.3 sensor?
Table of camera sensor size, area, and diagonal crop factor relative to 35mm full-frameSensor TypeDiagonal (mm)Sensor Area (in square millimeters)1/2.5″ Type7.1824.701/2.3″ Type (Canon PowerShot SX280HS, Olympus Tough TG-2)7.6628.071/1.7″ (Canon PowerShot S95, S100, S110, S120)9.3041.511/1.7″ (Pentax Q7)9.5043.3014 more rows•27 Oct 2013
What is darkroom process?
A darkroom is used to process photographic film, to make prints and to carry out other associated tasks. It is a room that can be made completely dark to allow the processing of the light-sensitive photographic materials, including film and photographic paper.