B&W film inspection

Bill Burk

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Andrew O'Neill said:
Funny... No sooner had this thread popped up, I find a Kodak #3 green safelight in our school darkroom...
Click to expand...

And Doremus Scudder found the graph, I was wrong - it lets less green than I thought… about 1/630th of the green gets through.

Also I found the siamese cat, it’s in the filters guide.

Note: the siamese cats show how fog ruins prints. When you fog a negative, you can correct for it when you print, fog doesn’t ruin a negative as secerely as it destroys a print.
 

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Peter Schrager

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Alan9940 said:
And, if you use pyro style developers the emulsion hardens as it developers which will make it even less sensitive to the green light.
Click to expand...

That's not true at all as I do this on a regular basis using Pyro. Funny how this post goes round and round....try the old Fred picker axiom
TRY IT!!
 

Andrew O'Neill

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Alan9940

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Peter Schrager said:
That's not true at all as I do this on a regular basis using Pyro. Funny how this post goes round and round....try the old Fred picker axiom
TRY IT!!
Click to expand...

I have tried it with several different pyro developers and never had any issue with the green light affecting my film. As a matter of fact, at one point I had a 10x12" safelight with the requisite green filter mounted directly behind the developer tray and short bursts of light toward the end of development was no problem.
 
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