These two photos show my attempt to use a microfilm (SanHuan SWII) in a reversal process, with a developer containing sodium sulfite (40g/L) as the silver halide solvent, and Dimezone S (0.8g/L), and Vitamin C (0.8g/L) in 250mL liquid.
Observation: After the first development and bleaching, the top and bottom edges of the film appear to have thinner silver halide layers. After the second development, these edges show less silver formation and look somewhat brighter. I did not observe this unevenness when processing about one-third of a roll (12 full-frame exposures) previously.
Question: I suspect this unevenness is related to the silver solvent or agitation. During the first development, the silver halide at the film’s edges seems to dissolve more than in the center. Does this hypothesis seem reasonable? Should I adjust the first development by increasing or decreasing sodium sulfite, or by changing the level of agitation? Or add more developing agent to prevent exhaustion? I’m generally satisfied with the overall results(as the image here), so I’d prefer to resolve this unevenness with minimal changes. I would greatly appreciate any guidance from anyone with similar experience.
Observation: After the first development and bleaching, the top and bottom edges of the film appear to have thinner silver halide layers. After the second development, these edges show less silver formation and look somewhat brighter. I did not observe this unevenness when processing about one-third of a roll (12 full-frame exposures) previously.
Question: I suspect this unevenness is related to the silver solvent or agitation. During the first development, the silver halide at the film’s edges seems to dissolve more than in the center. Does this hypothesis seem reasonable? Should I adjust the first development by increasing or decreasing sodium sulfite, or by changing the level of agitation? Or add more developing agent to prevent exhaustion? I’m generally satisfied with the overall results(as the image here), so I’d prefer to resolve this unevenness with minimal changes. I would greatly appreciate any guidance from anyone with similar experience.