While I've mostly used my original ColorStar as a metering timer for Ilfochromes and for RA4, it's also pretty handy as a densitometer when making B&W masks.
It's a little less useful for color printmaking without trial and error in filtration than I first expected, but still when making enlargements of various sizes, it can still save a lot of paper nevertheless. The probe has a spot meter area setting which enables finding an area of small area of density to measure off a known good print setting (might mention I also kept meticulous records). Raising or lower the stage on the enlarger, changing filtration or masking, etc, it becomes trivial to time the enlarger exposure for the exact same density. This works well within the bounds of the reciprocity compensation of the ColorStar (and the reciprocity window of Ilfochrome).
Even when working in color off a known good print/neg, calibrating for a new or aged enlarger bulb or new or aged pack of paper still requires zeroing the ColorStar out and making some test prints.
Last edited by Pupfish; 12-08-2009 at 12:36 PM. Click to view previous post history.