Here’s my situation:
I’m using Ilford Perceptol as a developer. I really like Perceptol - 30 years ago I got great results on FP4 and FP5 (135 and 120 format). So now that I’m cautiously returning to chemical photography (I hate the term ‘analogue’), Perceptol is my standard and I’d like to stick with it at least until I can achieve my former technical levels, but now on 8X10" film.
Now, Ilford states that 1000ml of stock solution has a capacity that’s good for 5 sheets sized 8x10”.
My Jobo 4450 drum (rotary development in Jobo CPA) holds 4 sheets sized 8x10”.
But the beaker of the drum has a maximum capacity of 600ml.
According to Ilford, that 600ml can only develop 3 sheets of 8x10”, not 4…
So here’s my question:
What do you recommend with 4 sheets in the drum? That’s an increase of 33% beyond the developer capacity…
- Should I increase development times by x-percent? Is that going to work at all??
- Forget about the 4th. sheet?
- And what if I want to increase contrast for N+1 or even N+2 development? Maybe stick to 2 sheets max?
Of course I can & should & WILL do personal testing, that’s the only way to be certain, but I’d like to have a starting point and so I’d like to hear your recommendations.
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