Caffeinol

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Gene Johnson - 11 Jul 2004 05:33 GMT

"it's a breakfast drink!"
"no, it's a film developer!"

Anybody done any more work with Caffeinol? I was curious to see if anyone
had tried it on Tpan.

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Donald Qualls - 11 Jul 2004 07:14 GMT

> "it's a breakfast drink!"
> "no, it's a film developer!"
>
> Anybody done any more work with Caffeinol? I was curious to see if anyone
> had tried it on Tpan.

I've used Caffenol LC (half the coffee of regular Caffenol) on Kodak
Imagelink HQ and Agfa Copex Rapid, but haven't actually tried it on Tech
Pan. Tech Pan is expensive enough many people are reluctant to
experiment with it...

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Gregory W Blank - 11 Jul 2004 13:03 GMT

> I've used Caffenol LC (half the coffee of regular Caffenol) on Kodak
> Imagelink HQ and Agfa Copex Rapid, but haven't actually tried it on Tech
> Pan. Tech Pan is expensive enough many people are reluctant to
> experiment with it...

I would snip part of a roll or make some snip strips from sheet film
to obtain a good process time rather than process the whole roll
or a sheet as a test.

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John - 11 Jul 2004 13:50 GMT

>> I've used Caffenol LC (half the coffee of regular Caffenol) on Kodak
>> Imagelink HQ and Agfa Copex Rapid, but haven't actually tried it on Tech
[quoted text clipped - 4 lines]
>to obtain a good process time rather than process the whole roll
>or a sheet as a test.

I used to purchase my films in 100' bulk rolls, wind 45 frames
to a roll and then expose at the 0, +/-.5stop and snip off about 8"
which would give me 5~6 frames. Particularly Tech Pan, TMX and TMY.

Regards,

John S. Douglas, Photographer - http://www.darkroompro.com
Please remove the "_" when replying via email

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Donald Qualls - 11 Jul 2004 16:05 GMT

>>I've used Caffenol LC (half the coffee of regular Caffenol) on Kodak
>>Imagelink HQ and Agfa Copex Rapid, but haven't actually tried it on Tech
[quoted text clipped - 4 lines]
> to obtain a good process time rather than process the whole roll
> or a sheet as a test.

I agree, that would be recommended -- but in 35 mm, I don't normally
shoot anything but Tri-X, and Tech Pan isn't made in 16 mm unperforated
(though Imagelink HQ has specs enough like Tech Pan I sometimes wonder
if it's not the same stuff with a different label at 1/10 the price).

BTW, another developer that works with microfilms is Diafine, but with
Bath A diluted 1:50; the result is about a 1 stop increase in speed for
most microfilms. This technique was originated for Tech Pan, and gives
EI 80 with that emulsion. There are also techniques using very short
Bath B times and undiluted Bath A that give EI 80 to 100 on Tech Pan.

Caffenol is probably crisper, though -- no solvent at all, so nothing
converting edges into mush.

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