Search found 546 matches

by Keith Tapscott.
Mon Oct 28, 2013 12:00 pm
Forum: The Digitaltruth Forum
Topic: Playing around with a Microdol- X Substitute
Replies: 24
Views: 46701

Re: Playing around with a Microdol- X Substitute

The formula you gave is more like a hybrid of D23 and DK20 than Microdol-X.

This developer mirrors Ilford Perceptol.
http://www.film-and-darkroom-user.org.u ... ostcount=1
by Keith Tapscott.
Thu Oct 10, 2013 9:14 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 18428

Re: Shelf life of Phenidone

I was using Tri-X 320, but my usual night film is HP5 Gary, you may find Andrew Sanderson's night photography photo's to your liking. He often uses HP5 Plus and (I think?) ID-11 (D-76) diluted 1+3 with partial stand development to control contrast. There are a set of exposure tables on the page of ...
by Keith Tapscott.
Thu Oct 10, 2013 4:21 am
Forum: The Digitaltruth Forum
Topic: Pre-Aging your Fine Grain Developer
Replies: 13
Views: 18257

Re: Pre-Aging your Fine Grain Developer

Kenny, yes. D-25 is simply D-23 with the addition of 15 grams of sodium bisulphite or metabisulphite per litre of stock. I don't know if they are the same component or different. You recommended that the developer formulas you gave to be reused. I would have thought that you might as well go all the...
by Keith Tapscott.
Tue Oct 08, 2013 6:24 am
Forum: The Digitaltruth Forum
Topic: Pre-Aging your Fine Grain Developer
Replies: 13
Views: 18257

Re: Pre-Aging your Fine Grain Developer

KODAK D-23/ w Kodalk Low to medium contrast film developer Water, 125F/52C 750 ml Metol 7.5 g Sodium Sulfite (anhydrous) 90 g Sodium Metaborate 2 g Water to make 1L Mixing instructions: Add chemicals in specified sequence. Dilution: Use undiluted Starting point development time: 12 mins (tank), 10 ...
by Keith Tapscott.
Tue Oct 08, 2013 4:41 am
Forum: The Digitaltruth Forum
Topic: Pre-Aging your Fine Grain Developer
Replies: 13
Views: 18257

Re: Pre-Aging your Fine Grain Developer

Surely it would be better to simply make a stock developer and a suitable replenisher such as D-76/ID-11? DEVELOPER 750ml of water at around 50*C Metol 2g Sodium sulphite, anhydrous 100g Hydroquinone 5g Borax, decahydrate 2g Water to make 1 litre of stock solution. Use without further dilution and t...
by Keith Tapscott.
Tue Oct 08, 2013 4:24 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 18428

Re: Shelf life of Phenidone

Speedibrews' web site states that it no longer does mail order. I wouldn't know where to get it. I can get Microphen here in the States. Silverprint in the UK sell Celer-Stellar. http://www.silverprint.co.uk/ProductByGroup.asp?PrGrp=5016 It is probably worth sending an email to Speedibrews first fo...
by Keith Tapscott.
Thu Oct 03, 2013 12:45 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 18428

Re: Shelf life of Phenidone

Out of curiosity, what film are you using for night scenes?
by Keith Tapscott.
Thu Oct 03, 2013 12:41 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 18428

Re: Shelf life of Phenidone

I wanted to use POTA for a night scene where there was too little available light. There were lights in windows and street lights, but not enough. I shot 6 sheets. Two were done with PMK, 1 with Ilfotec-HC 1:31, and one stand developed with a diluted Ilfotec-HC. None worked. I got lovely highlights...
by Keith Tapscott.
Tue Oct 01, 2013 12:16 am
Forum: The Digitaltruth Forum
Topic: Shelf life of Phenidone
Replies: 12
Views: 18428

Re: Shelf life of Phenidone

Hi all, I was attempting to develop a negative with POTA, which I mixed from chemicals on my shelf. It only has 2 ingredients: Sodium Sulfite and Phenidone. The Film Developing Cookbook says that it should have an orange color due to the oxidation of the Phenidone. My first batch was clear, so I th...
by Keith Tapscott.
Mon Sep 23, 2013 12:29 am
Forum: The Digitaltruth Forum
Topic: ILFORD PANF PLUS 50 X FOMADON R09
Replies: 6
Views: 12508

Re: ILFORD PANF PLUS 50 X FOMADON R09

I never found Pan F Plus to be particularly high contrast. I found an exposure of E.I.32 gave me better results than ISO 50 though.
D-76 diluted 1+1 provides excellent quality negatives.
by Keith Tapscott.
Thu Sep 19, 2013 6:10 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 13197

Re: Developers

Acuspecial was particularly interesting. Far better than Rodinal. http://www.photomemorabilia.co.uk/Paterson/Paterson_Acu_Range.html I have never used Acuspecial, but remember reading somewhere that this particular developer was an attempt by Crawley to make it behave similarly to Johnson's Definol...
by Keith Tapscott.
Tue Sep 17, 2013 5:52 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 13197

Re: Developers

Ornello wrote:
Has Paterson ceased making chemistry?
Yes, but they will continue to make darkroom products such as developing tanks, reels and trays etc as far as I know.

http://www.apug.org/forums/forum37/1227 ... icals.html
by Keith Tapscott.
Mon Sep 16, 2013 6:53 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 13197

Re: Developers

I had a discussion with a senior Ilford research manager over lunch on a visit to Mobberley back in the early 1980s and we touched on Paterson chemistry, what he had to say was quite an eye-opener. He'd been involved in the manufacture of Paterson chemistry as it was originally manufactered by Ilfo...
by Keith Tapscott.
Mon Sep 16, 2013 4:55 am
Forum: The Digitaltruth Forum
Topic: Developers
Replies: 8
Views: 13197

Re: Developers

For medium- and large-format films, developers are not critical. DK-50, DK-60a and similar commercial developers based on a combination of metol and hydroquinone as developing agents were deservedly popular for decades. For miniature film, superior results were obtained from D-76, and later, Microp...