Archived posting to the Leica Users Group, 2000/08/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 12:45 PM -0400 8/5/00, Krechtz@aol.com wrote: >In a message dated 8/5/00 12:25:41 PM Eastern Daylight Time, >CapsTeeth@aol.com writes: > ><< From that point on there was > more progress in contrast (a function of coating techology) than sharpness >(a > design function). >> > >That sounds about right. Where would composition of the glass and >manufacturing of glass and body fit into the equation? Any experts listening? By 'sharpness' I suppose you mean resolution? It's true that resolution is largely independent of coating technology, but contrast is also definitely a design function, meaning that it is dependent on choices of refractive indices and geometries of lenses. Even flare levels are dependent on design funtions as well as coating technology. * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw@archiphoto.com |[ ]| http://www.archiphoto.com