March '23

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G R A P H I C S - P R O. C O M M A R C H 2 0 2 3 • G R A P H I C S P R O 6 5 called the "Kelvin Shift," which occurs every single day and is visible on days when the clouds don't defuse the effect. Here is the trick… and it's foolproof in winning the color-of-the-wall or sub- strate-matching game (when the paint is faded or no paint code or stucco color mix number is available — which is most of the time). e beautiful thing about using a color book with a color number or paint code number is that no matter what time of day it is, the color that matches the stucco in the photo at that time of day is the same color number that will match that color at any other time of the day. e reason is that when the color book sample color and the wall or substrate color are both photo- graphed together, side by side, as a match or close match, then no matter what, the paint color number that matches that wall at the time of the photo is the color num- ber, no matter how different it looks in the photo. It's not the color in the photo; it's the real color of the paint number you are matching to. Having just the photo, without the paint code number and sample color, only gives you the "visual color" of the wall at that time of day, which has nothing to do with the color of the stucco, and there would be Here we see the same building, with the same relative lighting during the day, yet the angle of the sun creates a different color for the sign band. no way to duplicate the evening sky color. It's the color of the light that is reflecting off of the stucco color that is skewed by the Kelvin Shift. Take a look at the photo arrangement I have shown here, which is also available via my Pre-Sale Sign Survey Guide and Training Course. In this example, the sun is making the color of the wall look much darker than it is in real life. Compare it to the other photo of that same sign band taken on a sunny day. e color of the wall is completely different in such a way that creating an illustration of the sign on the wall is nearly impossible and com- pletely useless. Here, we see the match of the stucco wall color in a photo that was taken in the

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