Archived posting to the Leica Users Group, 2001/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> A1 = pi * 1^2 / 4 = pi/4 Okay, math whizkids, how comes it that Leica (and Canon) can make an f1 50mm lens, but no one can make an f1 wide angle lens? I should think it would get progressively easier (and smaller) to make an f1 35, or 28, or 24. But you get down to 24 and the fastest lens you can find is the Canon EF 24/1.4L. How come? Curious, Dan