|
|
|
-
The opening post was about Beers which is a paper developer.
Perceptol, as discussed by Barry Thornton becomes an accutance developer at 1:3 dilution which apparently brings the sulfite concentration down to some magical level at which it supposedly no longer acts as a solvent. Just for the record, I tried it because of that recommendation and did not see the effect that he was referring to, but my testing was very limited and hardly conclusive of anything. I could find the quote out of his book, but not tonight. Too tired.
-
right. that makes sense to me - well at least the high dilution part. I didn't know there was any relationship with sulfite concentration. I assumed they were independent of eachother - that you could have somewhat mushy grain but still have high acutance. I've used high dilution perceptol for years and years and years and was always very pleased with the effects. I think I was using a much higher dilution that 1+3 though. It makes for hellishly long dev times - but the result is well worth it!
-
 Originally Posted by Dave Krueger
The opening post was about Beers which is a paper developer.
Minus the bromide it is a film developer of the Beutler type.
Comparatively a little low on sulfite and carbonate. Dan
-
Originally Posted by dancqu
Originally Posted by Dave Krueger
The opening post was about Beers which is a paper developer.
Minus the bromide it is a film developer of the Beutler type.
Comparatively a little low on sulfite and carbonate. Dan
My apologies. I'm easily confused.
-
Originally Posted by Dave Krueger
My apologies. I'm easily confused.
Not at all confused. Beer's A, Ansco 120 and
likely a few other Paper developers along with
Beutler's, FX-1, Mason's and likely a few other
Film developers are all carbonated metol,
sulfite, developers. Dan
-
Sponsored Ad. (Subscribers to APUG have the option to remove this ad.)
-
Originally Posted by Dave Krueger
The opening post was about Beers which is a paper developer.
Just wanted to clarify here. Beers maybe a paper dev but that doesn't mean one can't use it on film. It wasn't clear to me whether the OP was using for paper or film. HOWEVER there seemed to be very little doubt he was talking about film based on this quote:
"It occurred to that very low sulfite levels produce sharper images ON FILM. Have I left mushy grained prints behind with that very low
sulfite brew?"
I take his suggesting the sulfite levels producing sharper images 'on film' to mean that it's the FILM that was unsharp. I doubt one would ever have that problem with paper for reasons others have brought up.
-
I Assumed.
Originally Posted by Sparky
Beers maybe a paper dev but that doesn't mean one
can't use it on film. It wasn't clear to me whether the
OP was using for paper or film.
"It occurred to that very low sulfite levels produce sharper
images ON FILM. Have I left mushy grained prints behind
with that very low sulfite brew?"
I take his suggesting the sulfite levels producing sharper
images 'on film' to mean that it's the FILM that was unsharp.
I doubt one would ever have that problem with paper for
reasons others have brought up.
Yes Beer's is a print developer which when used very
dilute is of the Beutler's type but lower in sulfite and
carbonate. I was speaking of a very low sulfite
Beer's used very dilute as a Print developer
and the Prints' resulting grain.
The Beer's components ratios are 1:3:3, metol, sulfite,
carbonate. Multiply by 8 for a full liter of stock strength.
Add a small amount of bromide if the Paper tends to fog.
Ansco 120 is a same and Selectol Soft a similar developer.
The altered brew has component ratios of 1:1:4. I upped
the carbonate in order to speed the development
of Emaks paper. So far inconclusive although
1 part carbonate won't do at all. Dan
|
|
Adv Reply
