I know the WhiBal target is not designed to be used as an exposure target, but does anyone have a good idea of what the R G B values in ACR set to sRGB , 8 bit) should be for the gr black, gray, and white target area of the target? I am using the target as a neutral to show differences in exposure ranges ( by dialing the flash power down from maximum energy on the lights and then adjusting ISO and aperture as needed) for various electronic flashes