Re: D76
- Original Message - From: David Miers Subject: RE: D76 I'm certainly not an expert in this field and offer this link only for your examination. Draw your own conclusions. I have. The old fashioned way. Running sensitometric tests of T-Max 100 and 400 film in both developers. I think it was one of Asimov's books, an archeologist who did no archeology. William Robb
RE: D76
I'm certainly not an expert in this field and offer this link only for your examination. Draw your own conclusions. That is the link to the main site. www.fineartphotosupply.com This is the link to the new developer I mentioned before. http://www.fineartphotosupply.com/FA1027%20Developer.htm This is a quote from their April news letter. D-76 is similar to D-23 and D-25, but with the addition of Hydroquinone. The Hydroquinone gives D-76 more energy, so there is less or no sulfite reduction of the silver halide. (This isnt secret information see Adams The Negative, pp 183-185). All of these developers, D-23, D-25, and D-76 are unrestrained. Perhaps this explains the high value compression in the D-76 developer action. Quite distressing. Shall I share something that is a bit of a secret? Kodak T-Max developer is the same formula as D-76, except its liquid. They are the same developer. I'd be happy to send a copy of the April news letter to anyone that wishes, but I think I might be pushing the envelope even reposting this piece on the group. If you subscribe to their news letter they do send you the current issue plus about 3 back issues of the free ezine type. There is a lot of tech-no-babble that quite frankly I don't completely understand yet in these letters and truly hope that some of the more skilled in this department might check this out and give us their opinions in layman's language. Dave -Original Message- From: William Robb [mailto:[EMAIL PROTECTED] Sent: Saturday, April 24, 2004 7:34 PM To: [EMAIL PROTECTED] Subject: Re: D76 - Original Message - From: David Miers Subject: RE: D76 According to a site that I recently subscribed to T-Max developer and D76 are actually chemically the same even though from what I understand one is a powder and the other is a liquid. Except that they give entirely different characteristic curves to identically exposed film. I expect they do share some common chemical compounds, but I have my doubts that they are the same, based on my limited experience with black and white processing. William Robb
Re: D76
I have to agree, this has been my experience as well. Also, T-Max developer seems to give bettter results at a higher temperature. Well, that's just me, could be the smoke from the incense Norm William Robb wrote: Except that they give entirely different characteristic curves to identically exposed film. I expect they do share some common chemical compounds, but I have my doubts that they are the same, based on my limited experience with black and white processing.
RE: D76
According to a site that I recently subscribed to T-Max developer and D76 are actually chemically the same even though from what I understand one is a powder and the other is a liquid. I'm not at home on my home systems, so I can't access the info right now, but will post a link tomorrow night if I remember. They are also selling a new developer made by a recently laid off engineer from Kodak in New York that knocks the pants off of most of them. I can't vouch for this as I've not tried it yet. Does make interesting reading though. -Original Message- From: Paul Stenquist [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 17, 2004 7:10 PM To: [EMAIL PROTECTED] Subject: Re: D76 ditto. And I got my best results exposing tmax 400 @200 and developing it for 11 minutes at 68 degrees F. Got that recipe from a serious BW fine art photog. It works. On Mar 17, 2004, at 1:37 PM, Mark Cassino wrote: At 11:12 AM 3/17/2004 -0600, you wrote: From: William Robb [EMAIL PROTECTED] The only developer that I found worked well with T-Max film is T-Max developer. Unfortunately, yes. That's why I'm moving to Pan F. I'm no expert on BW chemistry, but I get fine results using D76 1:! and TMax. - MCC - Mark Cassino Photography Kalamazoo, MI http://www.markcassino.com -
RE: D76
Interesting. So, what's the name of that developer from the old Kodak engineer (hope it's not my pants :-) ? Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -Oprindelig meddelelse- Fra: David Miers [mailto:[EMAIL PROTECTED] Sendt: 24. april 2004 04:21 Til: [EMAIL PROTECTED] Emne: RE: D76 According to a site that I recently subscribed to T-Max developer and D76 are actually chemically the same even though from what I understand one is a powder and the other is a liquid. I'm not at home on my home systems, so I can't access the info right now, but will post a link tomorrow night if I remember. They are also selling a new developer made by a recently laid off engineer from Kodak in New York that knocks the pants off of most of them. I can't vouch for this as I've not tried it yet. Does make interesting reading though. -Original Message- From: Paul Stenquist [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 17, 2004 7:10 PM To: [EMAIL PROTECTED] Subject: Re: D76 ditto. And I got my best results exposing tmax 400 @200 and developing it for 11 minutes at 68 degrees F. Got that recipe from a serious BW fine art photog. It works. On Mar 17, 2004, at 1:37 PM, Mark Cassino wrote: At 11:12 AM 3/17/2004 -0600, you wrote: From: William Robb [EMAIL PROTECTED] The only developer that I found worked well with T-Max film is T-Max developer. Unfortunately, yes. That's why I'm moving to Pan F. I'm no expert on BW chemistry, but I get fine results using D76 1:! and TMax. - MCC - Mark Cassino Photography Kalamazoo, MI http://www.markcassino.com -
Re: D76
At 11:12 AM 3/17/2004 -0600, you wrote: From: William Robb [EMAIL PROTECTED] The only developer that I found worked well with T-Max film is T-Max developer. Unfortunately, yes. That's why I'm moving to Pan F. I'm no expert on BW chemistry, but I get fine results using D76 1:! and TMax. - MCC - Mark Cassino Photography Kalamazoo, MI http://www.markcassino.com -
Re: D76
Date: Wed, 17 Mar 2004 13:37:35 -0500 From: Mark Cassino [EMAIL PROTECTED] * *I'm no expert on BW chemistry, but I get fine results using D76 1:! and TMax. * *- MCC *- * *Mark Cassino Photography * Sometimes the simplest, most essential things are forgotten D76 is great for many films. Excellent for Plus-X. But most developers do an excellent job. Few tradeoffs. With 135 film the differences can be dramatic. But in LF they're often not quite so significant and each provides a different character to images. You don't lose or diminish the sholder/toe (highlight and shadow detail available) as much as in 135. The greater degree of enlargement is the problem. As always, is because there's more information to work with and scale takes care of the issue. The only real developer issue I've ever heard of is Rodinal in some water suppies (specifically, Cleveland, OH) doesn't work well. Collin
Re: D76
Sometimes the simplest, most essential things are forgotten D76 is great for many films. Excellent for Plus-X. D76 1:1 also fine for 3200 films (at iso 800-1000) The only real developer issue I've ever heard of is Rodinal in some water suppies (specifically, Cleveland, OH) doesn't work well. Collin Too much minerals? I read that somewhere (I have it at home) that demineralized water (like the one resulting from inverted osmose process) is NOT good with some developpers, if not all. I would have thought the contrary to be true: too much minerals interact with developpers. Andre
Storing and using D76 1+1
G'day folks, I'm working on gathering the stuff I need to develope BW films, mostly Tri-X and HP5, perhaps Delta (does it matter?) Anyway, since it's what I've always used, I'll go for D76 1+1 and I'm having a hard time deciding what to store it in, how often and long to use it before I get rid of it... I've heard the dark brownish glass flasks are the way to go, only opening it when you use it. How many times can D76 1+1 be re-used with good results? And how much should development time be extended after how many times of usage? How long can you keep the developer good in terms of months, on the condition of good storing? Any comments and experiences are very much appreciated. All the best and greetings from a happy Pentax user, Rod. P.S. I am on no-mail, so you can either write to the list, or mail directly.
RE: Storing and using D76 1+1
-Original Message- From: Rodelion [mailto:[EMAIL PROTECTED]] G'day folks, I'm working on gathering the stuff I need to develope BW films, mostly Tri-X and HP5, perhaps Delta (does it matter?) Yes. No. Maybe. Anyway, since it's what I've always used, I'll go for D76 1+1 and I'm having a hard time deciding what to store it in, how often and long to use it before I get rid of it... This isn't anything worth worrying about. I've heard the dark brownish glass flasks are the way to go, only opening it when you use it. How many times can D76 1+1 be re-used with good results? Zero. Don't reuse diluted developer. You'll get dirt in the solution, the activity will change by some unknown amount. D-76 is cheap, use it diluted then throw it out. How long can you keep the developer good in terms of months, on the condition of good storing? The side of the D-76 package and Kodak.com will tell you this info. If you want to be conservative, cut this time in 1/2. tv
Re: Storing and using D76 1+1
I'm working on gathering the stuff I need to develope BW films Rod, Good man. Anyway, since it's what I've always used, I'll go for D76 1+1 [...] I've heard the dark brownish glass flasks are the way to go, only opening it when you use it. How many times can D76 1+1 be re-used with good results? None. That is, it cannot be re-used. Once it is diluted to 1+1 it should be used one time and then discarded. And how much should development time be extended after how many times of usage? How long can you keep the developer good in terms of months, on the condition of good storing? Packaged D-76 is somewhat different from the classic published formula, in that it has some preservatives in it, and is more stable in regards to pH. I keeps quite well as a stock solution. Here's what I do. I buy packaged D-76 in half-gallon sizes. I mix a half gallon at a time and decant it into brown-glass pint (16 oz.) bottles. I got my brown glass bottles at an ordinary pharmacy, for a few dollars; however, I've been told that most pharmacies no longer stock these, having switched over almost entirely to plastic. On the good side, I've been re-using the same brown-glass pint bottles for twenty years. Then I simply mix the 16-oz. bottle of stock solution with 16 oz. of water before use. Since I use a quart-sized developing tank, it makes the correct amount. It's a neat and efficient system. --Mike P.S. If you haven't used all four pint bottles of developer within a several-month period, SHOOT MORE. g
