Test Strips from BW400CN

Test Strips from BW400CN

On the lest, my initial try at grade 1, in whole stops on a 2-4-8-16-32 second sequence. On the right, a grade 3 sequence centered around what I calculated to be the right starting point, 3-4-5-6-7 second sequence. Made on Adorama VC RC Pearl paper, EL-Nikkor 50/4 @ f/8.

On the lest, my initial try at grade 1, in whole stops on a 2-4-8-16-32 second sequence. On the right, a grade 3 sequence centered around what I calculated to be the right starting point, 3-4-5-6-7 second sequence. Made on Adorama VC RC Pearl paper, EL-Nikkor 50/4 @ f/8.