Archived posting to the Leica Users Group, 1999/09/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]From: Godfrey DiGiorgi <ramarren@bayarea.net> Sent: Sunday, September 26, 1999 21:19 Subject: Re: [Leica] Another Scala question... > I guess in Zone system type parlance, I'm placing my > brightest details in Zone VII or VIII, given Zone V is 18% gray I'd like to know why the reference is 18% gray, rather than, say, 50% gray, which seems more logical. And how is 18% gray defined? Does this mean a random pattern of 18 black dots for every 82 white dots, or what? Most of the gray cards I see look as though they are actually more than 18% gray, but I'm not sure what the formal definition of this is. -- Anthony