Working in arbitrary units isn't "empirical" at all; you still do it by the numbers and in an exact manner... Working with a light integrator is much more absolute and exact than using a UV lightmeter (in the context of exposing UV sensitive material that is...); UV meters can measure the UV energy at a specific "point" of time whereas light integrators do it for the "whole time continuum / range" of the exposure (think of exposing in sunlight with a mackerel / buttermilk sky and lots of wind...), and in my book that's more exact. (Again, where the context is exposure...) Besides, let me remind that sometimes (often, in the context of alt-processes...) you can't rely on someone else's "absolute" numbers at all! Don't get lost in minute details, you need to see the whole picture... (For instance; in carbon printing, there are a myriad of details which has to be taken into account / that will affect the end result such as: The type / hide source / bloom / batch / percentage / volume per given area of gelatin, type / make / amnt. of the pigment, type / strength / application method of dichromate, drying time / RH, tissue support / final support ect. ect. Unfortunately, you simply can't fix them all so that they're identical to someone else's. Therefore & again, what's the point?)
Last edited by Loris Medici; 02-07-2012 at 05:49 PM. Click to view previous post history.
Reason: Changed the place of an explanation for sake of clarity, then added a last note