Had some unexpected results from film testing the other day, and just wondered if others had had similar experiences. I was testing 4x5 sheets of delta 100 in a 3006 expert drum with ID11 mixed 1:1. First step was to give it a five min presoak on the CPA at my normal rotation speed (setting 3, about 50-60 rpm).
According to Jobo, with a 5 min presoak times should come in around the same as for standard inversion developing, but here's the unexpected part. Ilford recommends around 11 mins for ID11 1:1. But my testing resulted instead of a time of 7min15sec. I then went on to test for N+1, N+2 etc and the test results seem to work out fine, I'm just wondering why my times would be so much shorter than expected by Jobo/Ilford? I did all my testing with a reliable densitometer, and temperature during developing was a constant 20 degrees C. Anyone else had similar experiences?
Thanks, appreciate your thoughts,
Scott
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