>>4276384Because the film is thin and develops extremely quickly; if you don't use a stop then the dev continues for a random amount of time and you get poor consistency from one dev to another. For a snapshitter shooting trash in their yard and editing digital scans, it doesn't matter at all, for someone using that film as intended, ie aerial mapping, or microfiche, or copy work, or contrast masking, etc. it's crucially important for obtaining consistent density.
>why the fuck are two europas rotting in your yard? 