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F/stop printer for analog printing black and white photos



F/stop printer for analog printing black and white photos
This beautifully crafted device is a timer used for getting the perfect exposure when making film prints of photos. But in addition to keeping time, it also does logarithmic calculations that are based on the f-stop values used for each exposure.
Via Hack a Day, Published: 2012.07.05


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http://hackaday.com/2012/07/05/fstop-printer-for-analog-printing-black-and-white-photos/