I use a mixture of paints to create P.C.10, and I am proud to say that no two models in the collection have the same exact shade! :-)
Basically, I use Tamiya "Olive Drab" and "Khaki" about 2/3 OD to 1/3 Khaki, then add in Gunze-Sanyo "Dark Earth" for tonal differences to get it toward the brown end.
To do "P.C.12," as I did for the Snipe (nobody can say for sure if it was P.C.10 or P.C.12, and I was just curious), I added in a bit of Tamiya Flat Orange, since P.C.12 has an orangish tint I am told by the experten here.
Post by Tom Cleaver. Excerpt from the WWI Modeling List Archives.
I can't help but feel that whatever decision anyone makes re: PC.10/PC.12 is little more than a *guess*. I don't believe it's something you can decide from a monochrome photo, and tellingly this is not usually attempted by "the pundits"
For one thing, if you use ortho film colours from the warm end of the spectrum appear progressively darker, colours from the cool end lighter. So.......
Lighter Darker Black<------------------------------------------------------------------------>Violet Blue Green Yellow Orange RedRoundel PC.10 PC.12Blue
....which is a simplification since PC.10 is greenish brown - that is, NOT a pure colour in the spectrum, and PC.12 is just oranger than PC.10, not orange. However it serves to illustrate the way orthochromatic rendition will change the brightness of different colours in a photo.
NOW - what about light. What say we photograph the PC.10 in dull light and the Pc.12 in bright light. PC.10 gets darker, PC.12 gets lighter.
And after that, compare the two photos. Now the PC.12 is darker on account of colour (but by how much) and lighter on account of the light (but by how much) and the PC.10 is lighter on account of colour and darker on account of light (but by how much)
AND....we didn't even take into account whether PC.10 is darker or lighter than PC.12 in reality, side by side under identical lighting.
FWIW *my* opinion is that deciding which was used is an exercise in futility unless you have an independant source, usually written, but a piece of certified fabric would be better ;-)
(OTOH I approve of the speculation. It make people challenge their assumptions and gives the colour police the heebie jeebies :-0 )
Post by Shane Weir. Excerpt from the WWI Modeling List Archives.
for PC-12 I use red oxide primer from the auto parts store. This red brown paint was used mostly on aircraft serving in the desert, Palestine & Libya if I remember correctly.
Post by David Calhoun. Excerpt from the WWI Modeling List Archives.