I need some helping interpreting my film speed test. I have attached 3 images from the N (normal) development roll of 120 film (Delta 100). The first image is Zone V, the second Zone IV, and the third Zone III. I think I made a couple mistakes and I may need to reshoot this. Mainly because the light was not even and I should have probably kept everything in focus. Anyway perhaps the more experienced here can help me decipher this. I metered from the grey card that is in the image and developed normally. I also developed the same exposures on 2 separate rolls at N-1 and N+1. Did I make a mistake by metering off of the grey card? Should I have metered for zone III or some other zone? The one thing I have learned from this so far is the affect of N-1 and N+1.... that is good stuff. Thanks.
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