Digital BW, The Print

Tom,

Depleted development is a fun trick.
I often use high dilutions of Rodinal, and minimal agitation, to 
achieve that same effect.

John Toles
http://www.dragonflyprinting.com/
http://www.dragonflygallery.ca/

On May 13, 2004, at 2:40 PM, HPA wrote:

> Here is an example:  you take a night photograph showing brilliant
> streetlights and deep shadows.  To develop this negative for maximum
> quality, you want to push process the low values (shadows) because 
> they need
> all the help they can get.  However, the highlights are already 
> over-exposed
> and need "pull development" so the emulsion doesn't become opaque.  To
> accomplish this, you put the film in developer for about 20 seconds, 
> then
> place it in a tank with water and let it sit without moving for five
> minutes.  The shadow areas continue building density for the entire 5 
> minute
> soak.  The highlights burn out the developer in contact on the 
> emulsion at
> once, and their development is arrested.  Repeat the cycle 3 times.  
> that is
> how you can both push and pull process a negative at the same time, 
> further
> information is in Ansel Adam's book "The Negative", he calls it water 
> bath
> development.  The only way that I know to accomplish this with a 
> digital
> camera is to make a series of exposures and put them together in 
> photoshop.