PDA

View Full Version : Alternative Developers - Coffee and all



Pages : [1] 2 3

titrisol
08-26-2004, 02:13 PM
Coffee is a very usable photographic developer for film and paper.
Research carried out @RIT (http://www.rit.edu/~andpph/text-coffee.html) showed that coffee, mint leaves, tree bark and othe rplant extracts were suitable for the purpose.

Shutterbug ran an article in it's September 2003 issue (http://www.shutterbug.net/features/0903sb_coffee/) which sparked the interest of some people @the photo.net community.
http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=003aPB


The recipes that were developed then were ccalled Caffenol or Folgernol and included sevral variations of the original.

RECIPES
Basic Caffenol from the article:
8oz water 4tsp instant cofee 2tsp Na-Carbonate

Caffenol Plus (http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=008Ev7) Caffenol + 1 tsp table salt

Caffenol LC (low conrast for mini-film) by Donald Quails (http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=008Gqd)
8 oz water, 2tsp coffee, 2tsp carbonate

Bob Fowler has printed some great pics using J&C Classic 200,
I have tested it in FP4+, APX100/400, Arista.EDU 400
Don Quails has tested it in document film (microfilm)

titrisol
08-26-2004, 03:24 PM
Donald Quails wrote:


Caffenol LC is 2 tsp. coffee crystals and 2 tsp. washing soda per 8
ounces
of water -- since I usually use it for 16 mm microfilm in my homebuilt
tank,
which holds two ounces, I mix it as 1/2 tsp. coffee and 1/2 tsp washing
soda.

For Imagelink HQ and Copex Rapid, 25 to 30 minutes at around 70 F seems
about right -- both films tend to thin negatives anyway, if they're to
have
proper tonal range, and the clear base makes them thinner still. The
same
process would likely apply to Tech Pan, but I don't know of anyone
who's
tried it.

The drill for both Caffenol and Caffenol LC is to mix in the soda and
stir
until all cloudiness and grittiness are gone, then add the coffee and
stir
until grittiness is gone again and the solution appears uniform.

John Koehrer
08-28-2004, 09:02 AM
Decaf or not? Seems pretty alternative to me. Need some now!

titrisol
08-30-2004, 04:37 PM
I have only tested the normal instant coffee.
The folger's crystals are reccommended but I bought Harris-teeter brand instant coffee and it worked as well.

According to the research carried out by Don Qualls, decaf should work to, since the main developer agent is caffeic acid and the tannins in coffee.

modafoto
08-31-2004, 02:00 AM
I have only tested the normal instant coffee.
The folger's crystals are reccommended but I bought Harris-teeter brand instant coffee and it worked as well.

According to the research carried out by Don Qualls, decaf should work to, since the main developer agent is caffeic acid and the tannins in coffee.

Will espresso increase contrast? And is steamed milk affecting the tonal curve?
:p

titrisol
12-03-2004, 09:42 PM
I decided to test Caffenol-c tonight...
500 ml of water (for 120)
1 gram Vitamin C
4 teaspponns washing soda
8 teaspoons instant coffee

I tested it on J&C Pro 100 film, exposed at approx 100 (I giuessed most exposures) for 25 minutes

The negatives look pretty good, the stain is there but les pronounced than my previous test that required longer times (30-45 minutes)
I think that some 10-15 extra minutes would increase the stain and improve the shadow density

I'll try to scan the negatives in a flat bed and let you know what happens

sanking
12-03-2004, 10:38 PM
Human urine contains the toxic benzene known as pyrocatechin and can be formulated as a photographic developer for film and paper.

Possibly a cheaper and more effective alternative to caffenol?

And can most likely be made super-additive with daily ingestion of Vitamin-C?

Sandy

David A. Goldfarb
12-04-2004, 07:33 AM
I think that post needs to be ported over to the "favorite beer" thread.

Ed Sukach
12-04-2004, 07:55 AM
Human urine contains the toxic benzene known as pyrocatechin and can be formulated as a photographic developer for film and paper.

Hah!! I've got to remember this ... I'm only drinking all this beer to make developer!!!

Amazing how the most "off-topic" discussions finally loop back to photography!!

zenrhino
12-04-2004, 11:16 AM
Caffenol Plus (http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=008Ev7) Caffenol + 1 tsp table salt


Not to sound needlessly wonky, but is that iodized table salt or uniodized?

titrisol
12-04-2004, 09:47 PM
mon-iodized salt


Not to sound needlessly wonky, but is that iodized table salt or uniodized?

titrisol
04-04-2005, 11:38 AM
Caffenol - C revisited

A while ago I tested adding 4 g/l of vitamin C to caffenol, reported my findings as not so pleasing initially. The stain dimisinhes and the image looked awfully thin.

BUT, after trying to print the negatives I was pleasantly surprised, it was very easy to print the images (despite long times due to stain), and the low contrast was no problem, tonality was long and soft.
Sharpness was a bit better than standard caffenol.

Claire Senft
04-04-2005, 12:12 PM
If I drink strong coffee follwed by orange juice will a better quality of pee result? Since agitation and temperature are important can I develop negatives directly from the stream? Does doing so while being pissed off shorten tne develpment time? Is my old prostrate going to prove to be a liability? For all the fellows out there is this a method for stand developing?
Should the ladies consider getting their feet wet with this method?

garryl
04-04-2005, 12:17 PM
If I drink strong coffee follwed by orange juice will a better quality of pee result? Since agitation and temperature are important can I develop negatives directly from the stream? Does doing so while being pissed off shorten tne develpment time? Is my old prostrate going to prove to be a liability? For all the fellows out there is this a method for stand developing?
Should the ladies consider getting their feet wet with this method?

Accually someone made a developer formulated from Urine. Human urine contains small amounts of Pyrocatchenol. So it might , coffee and pee, work. :D :D

Ole
04-04-2005, 12:22 PM
... Does doing so while being pissed off shorten tne develpment time?...

No, ascerbic acid has been shown to have damaging influence on all development.

David A. Goldfarb
04-18-2005, 06:42 AM
And for more on that subject, see this article--

http://www.cmaj.ca/cgi/content/full/172/8/1002

nspatel
02-09-2006, 06:47 PM
In case anyone is interested I have been playing around with coffee for a print developer. I kind of blended Gainer's Ascorbic Acid developer with coffee to get pretty good results. Basically it improves the develop rate compared to just using coffee and helps to preserve the solution a bit longer. The end result is pretty good with some warm tones in the greys. Here is an article with more details.

http://www.nspatel.com/article1.php

srs5694
02-09-2006, 07:26 PM
In case anyone is interested I have been playing around with coffee for a print developer. I kind of blended Gainer's Ascorbic Acid developer with coffee to get pretty good results.

You basically ended up with a conventional phenidone/vitamin C (PC) developer plus coffee. You might want to consider E-72 (http://www.stanford.edu/~cpatton/yingui/e72.htm) instead; it's fairly simple (five ingredients, including water) and it's lasted me through multi-hour sessions. I've also used DS-14 (http://silvergrain.org/Photo-Tech/print-dev-recommend.html) with good results. It's more complex, though.

htmlguru4242
02-10-2006, 11:30 AM
I've also heard about developers fropm tree bark / nut galls (Gallic acid or tannic acid, I'm assuming).

Does anyone know how to make one of these?

avandesande
02-10-2006, 11:42 AM
Fortunatly I pee dektol.