Dan Salzmann Posted June 3, 2005 Share Posted June 3, 2005 Does exposed film weigh more than unexposed film? Does developed film weigh more than undeveloped film? That's to say, do the chemical reactions that take place add weight to the filmstock? Link to comment Share on other sites More sharing options...
Premium Member John Pytlak RIP Posted June 3, 2005 Premium Member Share Posted June 3, 2005 Does exposed film weigh more than unexposed film?Does developed film weigh more than undeveloped film? That's to say, do the chemical reactions that take place add weight to the filmstock? <{POST_SNAPBACK}> How much does a photon weigh? ;) I've never seen data on this, but I assume more things (rem-jet, soluble absorber dyes, silver halide, etc.) are washed out/off of the film during processing than any added molecular weight of the dyes formed by reaction of couplers with oxidized developer. So I suspect that processed film weighs less than raw stock. Link to comment Share on other sites More sharing options...
Robert Morein Posted June 3, 2005 Share Posted June 3, 2005 Does exposed film weigh more than unexposed film?Does developed film weigh more than undeveloped film? That's to say, do the chemical reactions that take place add weight to the filmstock? <{POST_SNAPBACK}> Exposed film weighs no more than unexposed film. The loss or gain in energy, which equates to mass, is miniscule, not measurable. On the other hand, I would expect developed film to weigh less than undeveloped film, because the silver has been removed, and the antihalation backing stripped off. Link to comment Share on other sites More sharing options...
Dominic Case Posted June 3, 2005 Share Posted June 3, 2005 Does exposed film weigh more than unexposed film? Well, only very slightly - after all, what it's captured is only light. :rolleyes: Link to comment Share on other sites More sharing options...
Robert Hughes Posted June 4, 2005 Share Posted June 4, 2005 So I assume overexposed film will be lighter still - unless it's negative... Link to comment Share on other sites More sharing options...
Dominic Case Posted June 4, 2005 Share Posted June 4, 2005 So I assume overexposed film will be lighter still Not really, because over-exposure leads to a heavier negative, with more density. :lol: Link to comment Share on other sites More sharing options...
Premium Member John Thomas Posted June 5, 2005 Premium Member Share Posted June 5, 2005 I've found that poorly exposed film can weigh on you heavily. Link to comment Share on other sites More sharing options...
Premium Member Rich Steel Posted June 5, 2005 Premium Member Share Posted June 5, 2005 Developed film definetly weighs more especially if you use HEAVY WATER in the chemicals.... Link to comment Share on other sites More sharing options...
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