Archived posting to the Leica Users Group, 1998/09/04[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
At 07:25 AM 9/4/98 -0700, you wrote: >What do you think of processing at whatever the current room temperature >is, and adjusting the development time based on the deviation from 68 >degrees? I read somewhere that a good adjustment factor is 10% for each >4 degrees. I haven't experimented with this, but if it works it'll make >processing much more enjoyable. I don't because TMax films are optimized to be processed at 75 degrees. It's a whole lot easier to remember processing times too when you use three different films and push and pull one of them at four different speeds and another six different speeds.* According to John Sexton, who was one of their testers (I was too, but they didn't listen nearly as closely to me as him! <G>) the mid-tones are optimum at 75 degrees. I found him to be correct. Using Leica lenses, we should be optimizing our development as much as possible. No? As a photojournalist often processing my stuff on deadline (that is, walk into the darkroom at 8:50 and have the pictures in the system by 9:30) I used 85 degrees for speed. And 75 degrees when not on deadline. (* Tmax 100 at 100 - TMax 400 at 200, 400, 800, 1600 and P3200 at 400, 800, 1600, 3200, 6400 and 12,800. Now it's Ektapress 100, Fujicolor 400 and 800 - - the latter pushed up to 3200. I do miss black and white.) - -- Eric Welch St. Joseph, MO http://www.ponyexpress.net/~ewelch Prepositions are not words to end sentences with.