Search found 183 matches

by sanchell
Sat May 25, 2019 4:43 pm
Forum: Toning
Topic: Thiourea toning problem.
Replies: 1
Views: 22

Re: Thiourea toning problem.

Sodium carbonate is an alkali that works as an accelerator. Why don't you try adding that and see what happens? Second, Ilford uses a lot of hardener in their paper, far more than when many of these formulas were written. This came about as part of a three-way competition between Kodak, Agfa, and Il...
by sanchell
Sat May 18, 2019 11:24 am
Forum: Member Announcements
Topic: The Darkroom Cookbook 4th Edition
Replies: 8
Views: 2764

Re: The Darkroom Cookbook 4th Edition

There are two cryptic posts from you on the Darkroom Cookbook Forum. As we have had problems with people on this site purporting to be darkroom workers who in fact were not, would you please identify yourself, a web site would be good, and explain what you mean by your posts.

Thank you.
by sanchell
Fri May 17, 2019 3:55 pm
Forum: Darkroom Equipment for Sale
Topic: LF darkroom equipment for sale
Replies: 11
Views: 2444

Re: LF darkroom equipment for sale

Heiz, What is this about?
by sanchell
Mon Jan 08, 2018 9:21 am
Forum: Black & White Film Development
Topic: Dr. Roland F Beers variable contrast paper developer
Replies: 5
Views: 281

Re: Dr. Roland F Beers variable contrast paper developer

The Beers formula was being used to alter contrast on graded paper since Ansel was wearing knee pants. I have seen it published in numerous older texts but not one of them has been written by Dr. Beers, they are all simply reproductions of his formula. And you are correct, they may not be the origin...
by sanchell
Sat Jan 06, 2018 11:18 am
Forum: Black & White Film Development
Topic: Dr. Roland F Beers variable contrast paper developer
Replies: 5
Views: 281

Re: Dr. Roland F Beers variable contrast paper developer

My response to this post was slightly rushed last night. What I failed to mention is that Beers formula has been around for a very long time, and was in use when I began my career in 1970. In the 1983 version of The Print, Ansel Adams mentions it in three places in the text and provides the formula ...
by sanchell
Sat Jan 06, 2018 10:48 am
Forum: Black & White Film Development
Topic: Edwal FG-7
Replies: 1
Views: 132

Re: Edwal FG-7

I, too, was a great fan of FG-7.

The formula was proprietary and Edwal never published it. Someone at Edwal did give me a version that they said was authentic, but the formula did not make much sense to me. It is published in one of the earlier versions of the DCB.
by sanchell
Fri Jan 05, 2018 6:00 pm
Forum: Black & White Film Development
Topic: Dr. Roland F Beers variable contrast paper developer
Replies: 5
Views: 281

Re: Dr. Roland F Beers variable contrast paper developer

Saludos, Jesus. If it is simply the formula you're after you can also find it on page 282-283 of DCB4 or p. 287 of DCB3, as payral suggests. There are two VC paper developers of which I am aware. Dr. Beers formula is the most well known and the one I learned in the '70s. The other is Kodak D-64, whi...
by sanchell
Thu Jan 04, 2018 11:12 am
Forum: Black & White Film Development
Topic: Developing C41 in BW chemistry
Replies: 5
Views: 1751

Re: Developing C41 in BW chemistry

Great images, John, and ones you'll cherish for years to come, grain and all. :)
by sanchell
Wed Jan 03, 2018 12:33 pm
Forum: Black & White Film Development
Topic: dissolving phenidone
Replies: 3
Views: 223

Re: dissolving phenidone

What could I use instead to dissolve Phenidone? Phenidone does not dissolve readily in water, but is relatively easy to dissolve in distilled water at a temperature of about 175F/80C. It is readily soluble in solutions of alkali bisulfites and carbonates. This allows it to be readily incorporated i...
by sanchell
Tue Jan 02, 2018 1:47 pm
Forum: Black & White Film Development
Topic: D-23 Divided
Replies: 8
Views: 472

Re: D-23 Divided

I read in The Film Developing Cookbook about adding Sodium Chloride to D-23. Do you have any additional thoughts about doing so? I read somewhere (Large Format Forum perhaps?) that D-23 + Sodium Chloride is essentially Ilford's Perceptol. Don't know if that is valid though. Perceptol is one of the ...
by sanchell
Tue Jan 02, 2018 12:05 pm
Forum: Black & White Film Development
Topic: Percentage solutions
Replies: 3
Views: 197

Re: Percentage solutions

Crawley's classic FX 37 formula uses 0.5 g of Phenidone. It is far easier to measure out 50 ml of the 1% solution to use in a liter of FX 37 than trying to accurately weigh 0.5 g each time. I've just been corrected by Bill Troop on this. Rather than trying to paraphrase what he said here is what he...
by sanchell
Mon Jan 01, 2018 6:43 pm
Forum: Black & White Film Development
Topic: Percentage solutions
Replies: 3
Views: 197

Re: Percentage solutions

Darkroom Mike. Probably Enlarging and Printing would have been a better place for this, Darkroom Mike. But hey, who cares? We're just a bunch of guys and gals trying to share what we know. You've listed the three most commonly used percentage solutions. These are the three I list in the DCB. Edwal u...
by sanchell
Mon Jan 01, 2018 5:37 pm
Forum: Black & White Film Development
Topic: D-23 Divided
Replies: 8
Views: 472

Re: D-23 Divided

BZT is most commonly used to reduce fog in high pH developers that contain Phenidone. That said, I can think of no practical reason not to at least try it in a test batch. It's action will be greater than that of bromide. Normally you would start with 1/10 the solution concentration of bromide, but ...
by sanchell
Thu Dec 28, 2017 3:09 pm
Forum: Workshops and Seminars
Topic: FREE PHOTO CATALOG WORKSHOP
Replies: 1
Views: 245

Re: FREE PHOTO CATALOG WORKSHOP

I hope your workshops are going well.
by sanchell
Thu Dec 28, 2017 3:08 pm
Forum: Darkroom Equipment
Topic: Darkroom fabric
Replies: 2
Views: 217

Re: Darkroom fabric

I have some, too. Good stuff. I use black barrier plastic over my windows. I purchased it from a builder's supply, about $20 for a 10' x 50' roll. Attach it to a 1x1" or 2x2" wooden frame. Hang the frame from two or more nails, screws, etc. placed just above your window (inside or out). Store when n...
by sanchell
Thu Dec 28, 2017 2:20 pm
Forum: Errata
Topic: Formula #28 Mytol
Replies: 1
Views: 205

Re: Formula #28 Mytol

On reading the formula #28 Mytol on p.244 [the same is valid for the formula #26 of the 3rd Ed. on p. 218) there is a footnote about dissolving the Phenidone in methyl hydrate. I would say "methanol" or methyl alcohol, right? The formula and nomenclature is as Paul Lewis submitted. Paul is Canadian...
by sanchell
Thu Dec 28, 2017 2:06 pm
Forum: Errata
Topic: Formula #47: Kodak Research Lab
Replies: 3
Views: 249

Re: Formula #47: Kodak Research Lab

Great tip, Jesús, Thank you.
by sanchell
Mon Dec 18, 2017 11:59 am
Forum: Color Film Processing
Topic: C-22/C-41 Cross Process - Is It Possible?
Replies: 2
Views: 238

Re: C-22/C-41 Cross Process - Is It Possible?

Sounds like you're breaking new ground, Jeremy. Please keep us posted on how it goes.
by sanchell
Mon Dec 18, 2017 11:56 am
Forum: Errata
Topic: Formula #47: Kodak Research Lab
Replies: 3
Views: 249

Re: Formula #47: Kodak Research Lab

OOPS! The footnote should read:

Caution: Dissolve the sodium hydroxide in a small volume of water in a separate container before adding it to the solution of the other constituents.
by sanchell
Wed Nov 22, 2017 10:35 am
Forum: Black & White Film Development
Topic: FX-1 and the RECIPROCITY EFFECT
Replies: 10
Views: 570

Re: FX-1 and the RECIPROCITY EFFECT

Running water stop bath, one minute.

This is not an Agfa process.
by sanchell
Tue Nov 21, 2017 11:18 am
Forum: Member Announcements
Topic: Interview with Steve Anchell
Replies: 2
Views: 251

Re: Interview with Steve Anchell

Thank you.
by sanchell
Tue Nov 21, 2017 11:17 am
Forum: Toning
Topic: So, polysulfide toner does... nothing?
Replies: 4
Views: 264

Re: So, polysulfide toner does... nothing?

It came as a surprise to me when I first learned how much money, worldwide, was in machine processing of FB prints. Agfa, Ilford, and Kodak were cutting each others throats to win the largest share. The rise of RC was a direct result of the MP industry. FB sales to machine labs paled by comparison b...
by sanchell
Fri Nov 17, 2017 5:02 pm
Forum: Darkroom Equipment for Shipping Costs
Topic: Omega D2
Replies: 2
Views: 349

Re: Omega D2

Thank you, Mike. Yes, the enlarger went to Tom Brophy in Brooklyn, one of our forum members.
by sanchell
Fri Nov 17, 2017 3:10 pm
Forum: Toning
Topic: So, polysulfide toner does... nothing?
Replies: 4
Views: 264

Re: So, polysulfide toner does... nothing?

Polysulfide does ... something, but it depends on the process and materials. For example, Alexandra Opie, the head of photography at Willamette University, uses polysulfide as an integral part of her tintype process. Alexandra's tintypes are about the best I have ever seen. As far as paper, the issu...
by sanchell
Thu Nov 09, 2017 9:13 am
Forum: Black & White Film Development
Topic: FX-1 and the RECIPROCITY EFFECT
Replies: 10
Views: 570

Re: FX-1 and the RECIPROCITY EFFECT

Were I to develop a roll of Pan F+ in FX 1 I, too, would consult the digital truth massive dev chart. I find the times are not always correct for my methods, but they always get me within a few minutes - and I ONLY develop test rolls until I have determined the correct time, either through printing ...