Not quite finished yet but I wanted to share a document I’ve been working on. The document goes through the derivation of the ACES white point in gorey detail and provides some historical background for how it ended up where it is.
I’d love to hear what everyone thinks. The goal is for this document to be included in the ACES v1.1 release. I’ve attached a PDF but the LaTeX code is on sharelatex.com if anyone is feeling ambitious and wants to contribute. Track changes are on so I’ll see your input.
In relation to the LAD calibrated neg/print experiment (and colorimetry on such) is there any more data available regarding this experiment, and in particular the variation in luminance (L) per chromacity variation between print white and print black.
I’ve done a ballpark guesstimation based on L = 100% for print white, and L = 10% for the LAD point, and employed an assumption that an equal change in chromacity (in Luv space) corresponds to an equal change in luminance. I know this will be faulty because, if nothing else, it doesnt account for the variation in the gamma of neg and print stock. And this is born out in terms of the guesstimated luminance for print black (a density around 5.0)
So am hoping there is more data available regarding the experiment. Or any additional info on how to redo the experiment (be it virtually or actually).