Bob, of course it depends on your choice of developer
Originally Posted by bobwysiwyg
ID11/D76 & XTOL which I use are both fine.
I use my dev at 1+1 and so use 500ccs of developer per batch - which for ID11 gives me the capacity of 400 sq inches of film surface (10 sheets of 10x8 = 800sq inches x 0.5L)
8 sheets of 5x4 have 160sq inches of film surface.
Even if you managed to do 12 sheets in a tank you only have 240sq inches of film surface.
1L of XTOL has the capacity to develop 15 sheets of 10x8 film
However, if I were using Ilford Perceptol - which has a much more limited development capacity at 4 sheets of 10x8 per Litre of neat stock - I would have to limit myself to 8 sheets.
If you look at your developer manufactures data sheets they have the surface area of film each 1L of neat stock can process.
Note:- 1 off 135-36 film has the same surface area as 1 off 120 roll of film and 1 off 10x8 sheet (or 4 off 5x4 sheets) - they all come out at 80 square inches of film surface.
Hope this makes some sense