Darkroom and process
The changes made to the film itself, and the wording for each one.
A stock decides what the film can record. The process decides what survives. Everything on this page is a change made to the film itself, in the tank or before it ever went into the camera, and each one leaves a mark that no filter reproduces: grain that clumps, contrast that steepens, colour that walks off in one direction and stays there. Two more processes belong on this shelf and live elsewhere. Bleach bypass is published at /techniques/cinema/colour-grading/bleach-bypass/ and cross processing at /techniques/cinema/colour-grading/cross-process/, because both reached the cinema catalogue first, as grades.
In the tank
3Three changes made while the film or the print sits in the developer. The picture is already recorded, and the process decides how much of it survives.



Before the tank
3Three changes made to the film before it is developed, and in two cases before it is even shot. A roll loaded the wrong way round, decay, and damage done on purpose.



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