Archived posting to the Leica Users Group, 2003/12/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In reality, the stop process is gradual, albeit a fast one. After checking as many of the other possible variables, that was the one which made the difference for me. When Steve Simmons had a 4x5 workshop here in LA, the big question for discussion was the hyper-sensitivity of T-max. One person even found that holding the tank would give a process time shift. Another commented on the effects of exhausted fix on the contrast, leaving the emulsion looking muddy and producing flat looking films. The list, or gripping, went on. What I took for gospel with other films, I had to rethink with T-max emulsions. An then, never mind the modifications Kodak would make with the film without telling anyone about it, which one would discover only after the fact. Slobodan Dimitrov - ---------- >From: Eric Welch <eric@jphotog.com> >To: leica-users@mejac.palo-alto.ca.us >Subject: Re: [Leica] WAS: 35mm color vs. the tyranny now.. T-max dev. >Date: Sun, Dec 7, 2003, 2:58 PM > > That couldn't possibly happen. Unless you were using water as a stop > bath rather than an acid stop bath. In acid stop bath, development > stops instantly. Stop bath can't increase highlight density unless it's > just water and you don't agitate enough, so that development continues > for a while. Grain can increase because of a serious change of > temperature. > > On top of that, I found Kodak (for my style of processing) had > development times 30 seconds too long. > > But you are right, constant temperature is essential with TMax and > requires a water bath in rooms that don't stay at 68 or 75 degrees. > > On Dec 7, 2003, at 9:40 AM, Slobodan Dimitrov wrote: > >> But more importantly was the issue of consistent temperature controls. >> I >> found that if my stopbath was more than 2-3 degrees over the developer >> temp, >> the highlights would blow out. > Eric > Carlsbad, CA > > http://www.jphotog.com > > "Clichés are like analogies. At the end of the day, you're just beating > a dead horse" > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html