Saturday, June 3, 2017

More coffee, please!

Like I promised, I changed the last universal developer recipe like this:

800 ml water
3 g Potassium Metabisulfite
6 g CD4 (color developer for C-41)
30 g Soluble coffee
35 g Potassium Carbonate
1,5 g Potassium Bromide
Water to make 1 Liter

I developed for 12 minutes with constant agitation at room temperature, bleached and fixed. Perhaps I could have done 15 minutes too, the results would not be so different, I think.

Because coffee is acidic I raised slightly the Potassium Carbonate content and I got evidently better negatives and the difference can be appreciated by sight.

One of the 8 photos made with an Agfa Clack and expired Fujicolor Superia 100:


Eulalio Fabie de Silva said...


Thank you very much for this and now that I have found this! :) If I may ask for some clarification on the "agitation" part. Can you kindly clarify the "Constant agitation" part please? Within the 12 minutes, do I do it non-stop?


Henrique Sousa said...

Hi! Thank you for commenting, Eulalio!
Yes, constant agitation is non-stop! That is the worst part, but it is important to avoid grainy pictures. I use to hold the developing tank in one hand and keep it in circular movement all the time. Ok, accidentaly I stop for seconds if I need to switch the TV channel or whatsoever.
You are welcome!

vourmat said...

This is all good, but how about the storage of such a developer and how many films can be displayed in the bottom solution

Henrique Sousa said...

I have not tested yet to reuse it until exhaustion. It is a question of time but I hope the Potassium Metabisulfite will keep the solution active for many films. Thanks for commenting.

tcdp said...
This comment has been removed by the author.
TY said...

I’m trying this chemistry out and am running into problems. You don’t mention how long you’re bleaching or fixing for, are you also agitating the entire time like with the developer? I tried that and got blank negatives, probably washed it all off. What type of bleach are you using for this process? I mixed up 40g of potassium ferricyanide and 25 of sodium bromide and did it at room temp (20-22c), washed then fixed for 5 in Ilford rapid fixer. Maybe I should just not agitate the bleach so much? Use a different bleach? Any suggestions would be greatly appreciated!

Henrique Sousa said...

Hi! I don't think the problem is with bleach or fixer. What Carbonate did you use? It is meant anhydrous. Please check it.