Hello friends,
I have read the topic here a bit amused ... all reads in part, quite adventurous.
Downright philosophical ... and I've caught myself a few times when you smile
I've learned that you can identify as correct colors of photos, only ... when combined with a standard color card, preferably with neutral lighting was added.
This is done for a long time in scientific photos ... for example, in space exploration, on the Moon, Mars or underwater.
Photos do not allow conclusions on the true color to ... if they have not been included along with the respective standard color chart.
Just so the colors can be exactly determined.
The color photos or color negatives of our WWII pilots are simply too old that you could not determine exact shades with them.
They are corrupt, at best as a rough approximation helps visual orientation.
If you try color photos, color correct without categorize these tools, I look at the window-dressing, an illusion.
Even color samples of 3-D material in the form of painted wings or fuselage sections say nothing about how a color 80 years ago really looked.
Because ... Colors dry out with time, eg permanently lose Petro-liquids and other chemical substances ... regardless of whether they were exposed to UV light or not.
The surface structure of a color change over time.
This then changes the color and tonal value of a color, the aging process, some quite significant.
Tschüss
Heli