I use it all the time on my negatives but wondering if people use it when they print as well. Ya rookie question still better to ask than not know.
I use it all the time on my negatives but wondering if people use it when they print as well. Ya rookie question still better to ask than not know.
Negatives, being on a transparent base, are vulnerable to water spots. So you use Photo-Flo or another wetting agent to make the water run off evenly, leaving no spots or streaks. Prints, on opaque paper base, don't need this treatment.
I don't use it on anything. If it is allowed to dry on the edges of a film reel it becomes a catalyst which increases development along the film edges which show up as brighter edges in a print. I have use LFN as a surfactant for as far back as I can remember.
No photoflow on prints, but if you wipe the prints after air drying you might find that you remove very slight haze on the emulsion side - and I am over-the-top meticulous with washing. After 40 years some prints still have exceptional surface clarity.
(Glossy paper, obviously dried matte.)
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