[Alt-photo] Re: Four color gum

[Diana Bloomfield]

Okay; thanks. And you did use separation negatives?  My powered pigments literally just arrived. I'm trying it this afternoon. 

Sent from my iPhone

On Jun 1, 2013, at 10:34 AM, Marek Matusz <marekmatusz at hotmail.com> wrote:

> Diana,
> 
> The only thing for brushing and spray development is that you will need a longer exposure to begin with to have a more sturdy gum layer.. I would double your normal exposure time and then play with it. 
> 
> Marek
> 
>> From: dlhbloomfield at gmail.com
>> Date: Fri, 31 May 2013 17:30:56 -0400
>> To: alt-photo-process-list at lists.altphotolist.org
>> Subject: [Alt-photo] Re: Four color gum
>> 
>> Hey Marek,
>> 
>> Wow-- Thank you so much for sharing all these.  I love them.  I think they're really wonderful and definitely have that look that's so appealing.  And thanks for all the details.  I always use Quinacridone gold for my yellows.  For some reason, when I first started gum, I seemed to have problems with various yellows-- except for that one.  That's really interesting/informative to see the process here, too.  I love the gray/blue of it all-- and just a hint of pink in those few.  I look forward to trying this.  I had ordered some powdered lamp black-- but I do have graphite on hand, so I might try it with what I have tomorrow.  I'm thinking that the brushing/spraying technique is a bit tricky(?)-- but this is very helpful.  Thanks.  Really really like the look of these.
>> 
>> Diana
>> 
>> 
>> On May 31, 2013, at 2:32 PM, Marek Matusz wrote:
>> 
>>> 
>>> 
>>> All, Here is the link to my final set of pictures. All 3 prints are done now. https://plus.google.com/photos/105732508998271877151/albums/5882305049320410433 My workflow was somewhat different from Chia's. I used graphite gray (which comes as a nice neutral black on the print) for my fist black layer with K negative. Then I decided to use RGB separations for added color. My blue was cobalt blue (Daniel Smith). It is a very light, clean blue, which suited me well since I was going for a tint rather then full color saturation. I have included pictures of that stage.  Then I added magenta (quinacridone rose from DS). This turned out to be a bit more saturated then I would like. For one of the images I have included two versions of the print. One with just soak water development, perhaps 15 minutes and the second image after spray development and brushing. I need to cut the magenta concentration for my next project. I did do a lot of spraying and brushing to remove parts of t
> he
>>  i
>>> mage at every stage. For yellow I used Quinacridone gold PO49. It is more muted then typical process yellow. Just one of the images (amaryllis) contained a substantial yellow component and it blended very nicely with PV19 for the coral red of the amaryllis.  Finally another lighter graphite layer to adjust (darken) background and add a touch of contrast in parts of images.  That was one intense printing week and I am very excited about the images and the new printing workflow. I did try doing low saturation images before and they always come muddy and just unpleasant.  This workflow of starting with a solid black layer is just amazing as it allowed me to visualize the steps of adding hints of color while keeping solid and crisp image. Thanks to Chia for sharing. Marek                         
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