[Alt-photo] Re: DAS

[Kees Brandenburg]

Hi Marek,

Did you put the sensitizer in the pigmented gelatin? Or did you brush sensitize? What concentration did you use?
I can do a test with the group buy batch next week and do a steptablet test. I also got some and now have 3 different varieties in the studio. 
Normally DAS steptablet tests show a somewhat longer range than the regular 3 or 4 % dichromate sensitized tissue.
The irregularity you describe I have never seen. I can print the DAS sensitized tissue with the same negative as the dichromated, with a somewhat longer exposure.

Kees


On 26 apr. 2013, at 16:56, Marek Matusz <marekmatusz at hotmail.com> wrote:

> All,
> I have purchased some DAS for carbon work. I just made my first tissue and test prints with a step tablet. I will scan and post them later, but I noticed an non-liner response of the tissue to the light. In the highlights I get no exposure and my first visible step is already way dark. It is easier to describe with the picture. My prints are drying and I will scan and post them later.
> 
> Does anybody have step tablet tests of DAS sensitized carbon to share?
> 
> Marek