Jobo Expert Sheet Film Drum for 5-8x10 or 5x7 Film

You can follow standard film washing using sheet film or outside the in the Jobo Expert Sheet Film Drum for 5-8x10 or 5x7 Film. There are no set specifics on which is better or not. Some prefer inside and some prefer washing the film in a separate film washer.

Turn them on roller bases. You should presoak for at least five minutes. The duration isn't important, so long as it's long enough to permeate the emulsion. I don't adjust developing times for rotary processing. The effect of the presoak is to slow development. For B+W work, varying developing time by 10 percent doesn't seem to have a meaningful effect. If you are developing 5x7s in the 3005, you can process ten sheets at a time with it! In the darkroom, join two sheets along their long side with cellophane tape on the base side, not the emulsion side, to create a single sheet that is 7x10 inches, and slide it in one tube. Repeat. When you process the film and remove the negatives at the end, the antihalation dyes will remain trapped underneath the tape. That requires a rinse of 45 minutes or so to clear the spots, but once the dye's off the negatives are fine.

The inside dimensions of the Jobo j3005 15' x 7.2' diameter.

You can develop five sheets of film in the Jobo Expert Sheet Film Drum for 5-8x10 or 5x7 Film, using 350-400mL.