Archived posting to the Leica Users Group, 1996/05/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 06:07 PM 5/20/96 -0400, you wrote: > How does he compensate for reciprocity failure? If I remember correctly, T-Max films are very good at not suffering a lot of reciprocity failure. But there is some. It's easy. You just test like you normally would with the Zone system, and then use a densitometer to find out when density right. With sheet film and roll film, it's not that hard. Because seven minutes only 8 stops from about 5 second expsoure, or about one roll for each test of 120 film, or less than a 10 sheet box. Not that much film to waste to get the numbers one want. If you start with the Kodak chart for your film, probably only three or four rolls of film need be used for a full test, if one is careful. ========================== Eric Welch Grants Pass Daily Courier