>>13311259alchemy and optics were tightly linked fields of scientific investigation right up until the end of era of chemical photography
https://en.wikipedia.org/wiki/Photographic_hypersensitization>Note that digital cameras of all sorts, including the DSLRs now widely used by amateur astronomers, have zero reciprocity failure and outperform even the best hypersensitized filmfalse, no DSLR on the market currently could outperform film because DSLRs all have small, gay, detectors which don't even have the onboard thermoelectric cooling needed to get low read error off a chip and benefit from something near the chip's full potential. larger, non-DSLR digital cameras outperform film, current DSLRs aren't all that much of an upgrade from film other than the cost and speed of developing the images.
