Volker, I tried a catechol developer with Efke op12 lith film and the result was not high contrast, not medium contrast, but LOW contrast! I really got scared! :-O(posted 8354 days ago)I think the trick is to expose the lith film at a low speed rating (I used 3 Asa) and develope the film in a real compensating developer, and highly diluted catechol must be the best developing agent for this purpose.
I will try Macophot Ort25 too soon, and it will be very interesting. Especially when one can use a red safelight in the darkroom and cut the 120-film to be spooled on 127-rolls just with a sharp knife and a ruler. Yeah, an extremely fine grain film in my Rolleiflex 4x4!
Keep on experimenting folks!