Normal-focal-length lens. A lens that provides about the same angle of view of a scene as the human eye and that does not seem to magnify or diminish the size of objects in the image unduly.
-Action Stopping Shutter Speeds for Normal-Focal-Length Lenses Speed MPH Type of Action Distance Direction of Action 5 10 25 100 Slow walk, working with the hands Fast walk/ work, slow-moving vehicles Running, sports, very active people, ...
How a lens works
Lens focal length and angle of view
Normal-focal-length lenses
Wide-angle lenses: short focal length
A telephoto view: long focal length
Portraits with a long lens
Zoom lenses
Perspective: how a photograph shows depth ...
 See also: Aperture, Photography, Lenses, Focal, Photograph
  
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