[alt-photo] Re: back again

[sam wang]

Franklin Enos, who taught me casein, was exposing for as short as 17 seconds under his big UV bulb. His test exposures varied by one or 2 seconds! So I agree, it's probably not the process to use without precise control of exposure.

One can always change the distance of light source, of course. But Franklin liked it short. He would finish a print in minutes, alternatively soaking it in ammoniated water and blasting it with water. Now we know not to do that, but he got some amazing black and white prints with nearly full tonality.

Sam Wang

On Oct 24, 2011, at 8:32 PM, Joseph Smigiel wrote:

> I might suspect the glass is absorbing UV.  My casein exposures were always briefer than gum and on the order of one minute or less IIRC.  I never pursued casein because I felt gum was more controllable with the longer exposures (1-6 minutes).
> 
> joe