You are correct. I designed the article to be very approachable and understandable for the normal person. As such, I took some liberties like only showing HDR primaries and ignoring transfer function. I linked to Chris Lilley's post to give experts a more correct answer.
But wide color gamut was already possibly in PNG via ICC profiles (HDR was not). And those primaries I showed could have been used in a wide color image.
So the image is a bit misleading or red-flag-y to experts who know. But to the average person, I think it is as truthful as I can be without getting too deep in the weeds.
But wide color gamut was already possibly in PNG via ICC profiles (HDR was not). And those primaries I showed could have been used in a wide color image.
So the image is a bit misleading or red-flag-y to experts who know. But to the average person, I think it is as truthful as I can be without getting too deep in the weeds.