What is the purpose of the small brass "lever" on a Goerz Red Dot Artar (19")? Moving the lever reveals a slot in the lens housing. Is this slot for filters or some other application for using the lens as a process lens
What is the purpose of the small brass "lever" on a Goerz Red Dot Artar (19")? Moving the lever reveals a slot in the lens housing. Is this slot for filters or some other application for using the lens as a process lens
It's for filters. James
Or for Waterhouse stops that are like f/stops but are calibrated in a way that makes graphics exposure/magnification calculations possible. Process lenses don't generally need filters much indoors.
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