There are a number of formulae that come in handy for film photography and darkroom printing. I'm gathering the most significant formulae I use below, and will update the list when I have more to add:
Convert Filter Factor to f-stops:
Friday, November 6, 2026
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General advice in various darkroom-focused groups on the internet tells us to only use the "middle" aperture of an enlarging lens,... -
I love sepia toning my prints, not only because it's an archival toning method but also because it can add very subtle color effects to ...