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 4:44 PM -0400 8/5/00, Krechtz@aol.com wrote: >In a message dated 8/5/00 3:53:45 PM Eastern Daylight Time, >henningw@archiphoto.com writes: > ><< That's the real test of the effective relative > aperture, or 't-stop'. >> > >For more on T-stops or T-numbers and related topics, see the Focal >Encyclopedia of Photography. In the 3rd Edition (1993), check p. 791. I was >looking for the name Cooke, which I remember as the name of the optical firm >which developed lenses calibrated in T-stops. There may have been others >unknown to me. > >Joe Sobel Many movie camera lenses are calibrated in t-stops. * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw@archiphoto.com |[ ]| http://www.archiphoto.com