Originally Posted by
Ulophot
As indicated above, the LED head, which uses a cheap 16x16 RGB panel, was an open question when I began using it. I eventually borrowed a friend's Stouffer 21-step scale and used it for contact prints so that I could dial in an unfiiltered Gr 2. It end up at around 150G, 240 B. Through various "adventures" between then and recently, including replacing the LED panel -- long story short -- I got my own Stouffer and made projection prints this time, retesting to get the same contrast whether I used no filter or a Gr. 2 Ilford one (this time, 160G, 255B), and found that with a Gr. 2 coming from the head, my Normal film development was yielding a neg with grossly inadequate density. My exposure was just slightly less than it should have been for the test (bellows comp), but the 9 min development was landing Zone X on Zone VIII. A new set of tests has brought my N development to 11 1/2 or 12 minutes, with appropriate additions to my N-1 and N+1, which is as far as I have gotten.
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