You say:
>The only developing agent that will last even an hour without an inhibitor
>like sulfite is Amidol, and that's not particularly good for films
When we conducted a series of tests some years ago to discover the best
combination of film and developer for platinum printing there was no doubt that
amidol came out streets ahead of anything except PQ Universal for tonal range,
separation of tones and gradation.
But that of course was for large sheet film for density ranges above 1.8; not
the kind of negatives needed for silver gelatine.
On the other point of amidol working without sulphite I thought that the huge
amounts of sulphite in the standard recipes kept the thing going.
Have I again been believing too much of what I have read in books ?
Terry King