[Tig] need 18% gray paint

peter_swinson at compuserve.com peter_swinson at compuserve.com
Fri Jan 28 15:43:19 GMT 2011


 

 
Kodak usedto make a gray camera reference 10” x 8” (cat 152 7795).  This was 18%reflectance Gray on one side and 90% “white” on the other. Maybe they couldadvise what paint/inks they used.
 
I guess,though stand to be corrected, that if you used carbon black powder mixed withTitanium dioxide white powder, in the correct ratio for 18% reflectance thenyou would not have any spiky wavelengths to worry about
 
Cheers
 
Peter



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