Archived posting to the Leica Users Group, 1998/04/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>This is my opinion on the whole "what is a normal lens" and "what >lens has the same angle as a human eye" issue. > >http://www.ans.com.au/~chrisb/photo/technical/normal.html I read your web page. Interesting. But two things, the focal length of 43mm comes closest to the impression the human eye yields as far as magnification. That's why they say lenses in this range is normal. Not per= ipheral vision for sure, but the impression of the magnification. Another reason a 50 in = the M3 seems so natural. You can keep both eyes open. (Magnification of viewfider, not lens). As for 50mm being easiest to design, not true. Short teles are the easiest= to design, because the angle the light passes through the lens is minimized compared to longer and shorter focal lengths according to the optical designers I've read. The reason 50s are so cheap is there are so m= any of them! Notice, the 90 Summicron isn't any more expensive than the 50 Summicron.