Re: Coffee as a developer

[Pablo Coronel <pablo.coronel.70@xxxxxxxxx>]

YES, check the silent observer (DON QUALLS) website for many other " developments" (pun) on this formulas.
http://silent1.home.netcom.com/Photography/Dilutions%20and%20Times.html

Caffenol
8 oz.	Water
2 tsp (level)	Arm & Hammer Washing Soda
4 tsp (slightly rounded)	Folger's Coffee Crystals
Mix soda until completely dissolved and solution is clear.  Add coffee, mix until all grittiness is gone and solution is uniform, let stand 5-10 minutes until microbubbles clear.  Use within 30 minutes.  Gives imagewise stain and general (fog) stain.

Film (EI)

Time (at 20° C)

Agitation Interval

(old) Tri-X (400)

30

1

Fomapan 100

30

1

Caffenol C
8 oz.	Water
2 1/2 tsp (level)	Arm & Hammer Washing Soda
1 g	Ascorbic acid or erythorbic acid (supplement or technical, 97%)
4 tsp (slightly rounded)	Folger's Coffee Crystals
Mix as for Caffenol.  Expect slight film speed increase (1/3 to 2/3 stop) and little or no stain.

Film (EI)

Time (at 20° C)

Agitation Interval

(old) Tri-X (400)

12

3¹

Fomapan 400/Ultra 400

12

1²

HP5+

12

1³

Note 1: Flow marks; adjustment still required.
Note 2: Very heavy fog, may be untenable combination.
Note 3: Considerable fog, but contrast looks okay.

You can also make Rodinal equivalent with paracetamol (Tylenol).

As per fixer, hypo is generally sold in pool supply stores or chemistry stores; chlorine clear or something like that,

Cheers
PABLO

On Fri, Jul 15, 2011 at 8:21 PM, Trevor Cunningham <trevor@xxxxxxxxxxxxxxxx> wrote:

One of the things keeping me from shooting film is the absence of dedicated chemistry in Saudi as well as the challenge and cost of shipping them as well. Then a thread on the alt-process forum popped up about using coffee and a base as a developing agent for film and paper. A RIT /*article*/ <http://people.rit.edu/andpph/text-coffee.html> explains some brief research into the process, but lacked the referenced images.

1) Does anyone have experience with this? or have images resulting from this process to share?

2) I would also need a DIY soup recipe for fixer. Hypo? Can't I get that from someplace that sells swimming pool supplies?

I'd really like to get a pile of Adox film. My Mamiya has been collecting dust for about four years now...feeling guilty.