[pure-silver] Re: Phototec times for Tri-x and Tmax 100

Hi Janet,
There's no need to develop 120 film any longer than 135 film is there? A 36 exp. roll of 135 film has about the same surface area as a 12 exp. roll of 120. They get same the treatment - or have I misunderstood something along the way?
The best proof of whether you're developing your film properly is in the printing process. Given, your exposures are correct, if you have trouble controlling highlights, you're over developing, if you're having trouble achieving adequate contrast, you're under-developing. If every film is different, you're not being consistent in your routine, or not being able to control the variables (time, temp, agitation, chemical freshness, etc.).
I've read elsewhere that developing a consistent approach to the making of contact sheets is the best way to learn what's happening in film processing, and allows comparison from roll to roll.
Carving out the time to get better and better at doing all this gets harder and harder, but it sure is fun.
I'm encouraged to hear that you started a club. I've been toying with the idea of approaching the local high school and seeing if they're interested in having one for their students. How's your club doing, how often to do you meet, where, etc. I'm interested in learning more about if you'd like to share. 

Elias



On Aug 26, 2008, at 9:19 AM, Janet Cull wrote:



On Aug 26, 2008, at 3:08 AM, mail1 wrote:
I have rarely found list times correct, although they will get you started 
in the right direction.
I don't know how to adjust times according to what I see, minutely. Of course I'd know if it's badly overdeveloped (which I've done) or badly underdeveloped (which I've also done), but if it's close I haven't a clue. (I even started a little film club here, hoping there would be darkroom people with more experience, so I could learn hands-on. I'd love someone to hold my negatives and tell me specifics. Unfortunately, there's only one young man who has done some darkroom time.)
I routinely need to give more development time to my 120 film, but 35mm is usually right on... as far as I can tell.

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