- Joined
- Sep 13, 2005
- Messages
- 3
- Format
- 35mm
Base material
35 mm roll film: Polyester, 100 μm, blue
Roll film 120: Polyester, 100 μm, blue
Cut sheet film: Polyester, 175 μm, blue or clear
Fotohuis said:... You need for these kind of films a depth developer to reach the best preformance. ...
Ole said:In other words: Use D-76, not Rodinal if you want to use the "standard" developers.
Come to think of it, Rodinal at 1:25 could be "depth" enough, but 1:100 is definitely not right.
Ole said:Søren, very dilute Rodinal is an "acutance" developer. Another term for exactly the same thing is "surface developer". It develops from the surface down - and it is very obvious when developing sheet film by inspection. With a multi-layer film it is generally better to use a developer which develops the whole emulsion at the same time, like D-76. An Amidol developer might be even better - some of them are capable of developing from the bottom up!
Rodinal was originally made as a fine grain developer, and at stronger concentrations it is still that. With increasing concentration it will more and more work as a "normal" (non-acutance) developer.
There are actually cases where surface developers are not optimal...
Man, I feel stupid
Ole said:In other words: Use D-76, not Rodinal if you want to use the "standard" developers.
Andre R. de Avillez said:Just a quick question:
Does diafine (hydroquinone/phenidone 2 bath) count as a surface or depth developer? Since the hydroquinone & phenidone are absorbed by the whole emulsion before the 2nd bath comes into the picture, I'm under the impression that it's a depth developer... am I wrong?
André
And, one funny thing. I see that the "cover photo" of the Pan25 is the same used at the Moersch Photochemie website
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?