Classification of lenses according to Focal Length, Image Format, Characteristics, Utilizations

Name of the lens

Focal length35mm equivalent

Image Angle

Characteristics

Utilizations

Short focal length lens or WIDE-ANGLE lens
21mm
90°
Wide image angle. Large depth-of-field and luminosity.
General plans and close objects that need a wide image angle and a large depth-of-field. It gives exaggerated perspective effects. Not good for portraits.

Medium focal length lens
35mm
63°
Normal image angle, with a perspective similar to that of a […]