On 20 Jan 2016, at 17:04, Ernst Dinkla <info@pigment-print.com> wrote:
I wonder whether the light source of a slide duplicator is aimed well enough at the RGB filtering of the digital camera sensor to get the best gamut etc. The sensitivity of the duplicating color film must have been aimed at the available media + light sources then, DSLRs not so far.
The flash tubes in the old Bowens Illumitran have a spike at 470nm but the chart is then relatively flat all the way to 680nm. High quality Neutral Density filters flatten things out nicely — apart from the burst of heat starting at 680nm :) We’ve never had any problems with colour reproduction using Nikon sensors like the D800E & Illumitran. The reproduction issues are all about keeping the originals clean and flat :( -- Martin Orpen Idea Digital Imaging Ltd