Archived posting to the Leica Users Group, 1998/09/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]why ektapress 100? Just curious. Not reala, gold 100 etc. thanks steve - ---------- >From: Eric Welch <ewelch@ponyexpress.net> >To: leica-users@mejac.palo-alto.ca.us >Subject: Re: [Leica] Erwin and TMZ >Date: Sat, Sep 5, 1998, 12:46 AM > >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. >