We have a small misdirection here or understanding as to what it is that I am trying to do, and what some people may assume. I use D23, as a reference, and even thou most people think that the formula is Kodak's, it actually belong to Bogish and Hauff, the two persons that discovered Metol in 1891,...

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

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 ...

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...

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 ...

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...

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...

Out of curiosity, what film are you using for night scenes?

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...

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...

New Tetenal Ultrafin T-Plus Developer.

http://www.chemia-fotograficzna.pl/file ... s_info.pdf

http://www.fotoimpex.de/shop/images/pro ... chuere.pdf

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.

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...

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

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...