[alt-photo] Re: New gum pigment
kthayer at pacifier.com
Mon Jan 24 15:58:40 GMT 2011
Hmm, my question was whether the silver sheen comes through in the
final print; I'm guessing from your answer that it's not. I might
have a slight quibble with your side comment about carbon black
tending to warm. There are several carbon blacks, which are all
carbon ash from something organic being burned but differ slightly
because of what was burned to produce the carbon. PBk 6, lamp
black, I wouldn't say from my experience has a warm cast; if it has
any cast at all it tends toward cool, but it might depend on brand.
PBk7, furnace black (sometimes named carbon black) I don't think I've
used. PBk8, which is made from wood (burned willow branches or
other twigs or vines) I haven't used either. PBk9, another carbon
black which still carries the name "Ivory black" because it used to
be made from charred ivory although now it is entirely made from
burned animal bones, is quite warm in tone, in fact the ivory black
I use prints as a nice rich chocolate brown in a medium
concentration. So it really depends on what "carbon black" you mean,
whether a carbon black tends to a warm tone. And as far as neutral
blacks, the most neutral black I've used, currently my favorite
black, is not a carbon pigment but iron oxide, PBk11.
On Jan 23, 2011, at 6:20 PM, Marek Matusz wrote:
> The silver luster is very visible when wet in the solution and it
> is absolutely neutral grey in light tints. On the other hand the
> other form of carbon, Carbon black (lamp black) tends to be rather
>> From: kthayer at pacifier.com
>> Date: Sun, 23 Jan 2011 14:45:15 -0800
>> To: alt-photo-process-list at lists.altphotolist.org
>> Subject: [alt-photo] Re: New gum pigment
>> Hi Marek, this is a new one on me; I haven't tried it, but it
>> sounds intriguing. According to handprint, it has the silver luster
>> of graphite, which could be quite appealing. Have you noticed that
>> luster in your gum prints?
>> On Jan 23, 2011, at 12:16 PM, Marek Matusz wrote:
>>> I just started doing gum with graphite pigment. I bought a tube
>>> from Danied Smith, it is called graphite grey. This is the pigment
>>> that is used to make pencils for those that are not very familiar.
>>> It is kind of silvery grey but it can be quite dark. It is really a
>>> beautiful alternative to lamp black. I am on a second gum layer and
>>> just realised that I have not preshrunk the paper. It is impossible
>>> to register the second layer. Oh well I will finish just to have an
>>> idea for the two pass tonality.
>>> Has anybody tried it?
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