Difference between revisions of "Standard lens"
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| − | A '''standard lens''' or ''normal lens'' for [[35mm]]-format (called "full format" in digital age!) has a focal length | + | A '''standard lens''' or ''normal lens'' for [[35mm]]-format (called "full format" in digital age!) has a fixed focal length between 40mm and 58 mm. |
A [[35mm]]-format lens with [[focal length]] 43mm is considered to have a "natural angle of view", as well opposed to [[wide angle]] lenses as to [[telephoto]] lenses. The natural "field of view" of a human is 180 degrees. Maybe the "naturalness" of a 43mm lens is derived from the 35mm-format's 43mm diagonal. A lot very fast variants of 50mm, 55mm, and 58mm lenses exist. Thus the term ''standard lens'' may have been extended so far above 43mm since it was a practical focal length for superb fast lens constructions. | A [[35mm]]-format lens with [[focal length]] 43mm is considered to have a "natural angle of view", as well opposed to [[wide angle]] lenses as to [[telephoto]] lenses. The natural "field of view" of a human is 180 degrees. Maybe the "naturalness" of a 43mm lens is derived from the 35mm-format's 43mm diagonal. A lot very fast variants of 50mm, 55mm, and 58mm lenses exist. Thus the term ''standard lens'' may have been extended so far above 43mm since it was a practical focal length for superb fast lens constructions. | ||
Revision as of 10:40, 26 October 2013
A standard lens or normal lens for 35mm-format (called "full format" in digital age!) has a fixed focal length between 40mm and 58 mm.
A 35mm-format lens with focal length 43mm is considered to have a "natural angle of view", as well opposed to wide angle lenses as to telephoto lenses. The natural "field of view" of a human is 180 degrees. Maybe the "naturalness" of a 43mm lens is derived from the 35mm-format's 43mm diagonal. A lot very fast variants of 50mm, 55mm, and 58mm lenses exist. Thus the term standard lens may have been extended so far above 43mm since it was a practical focal length for superb fast lens constructions.
see also lens
