Singh, Sarbjit (S.) wrote: > Does any one know what the human eye equivalent is in lenses (using > the 35mm film as basis of comparison). > > I have heard different numbers i.e. > > 1) The effective focal length of human eye > is between 13-16mm, and the effective numerical > aperture is about f3 to f4. > > 2.) The effective focal length of human eye is 50mm > > 3.) The effective focal length of human eye is 105mm > > 4.) The retina ASA, it far exceeds any existing high > speed films ----------------------------------------------------------- The 24mm lens on a 35mm camera is the equivalent of the human eye viewing angle. Focal length it would be about 57mm when you have the same objects the same size but the angle in a 35mm camera is significantly narrower. I have no idea of Retina ASA.
Peter K * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
