White Balance
Every so often, the auto white balance setting on the camera does not render the colors as accurately as I would like under challenging lighting conditions. This was the case while I was shooting license plates at the historic Wyoming Frontier Prison in Rawlins. The color of the original image was far too yellow. The wall behind the license plates was white.
Wyoming License Plates
I always keep a WhiBal card in my camera bag for just such situations. I simply hold the card near the subject and take a picture.
Wyoming License Plates
Then, I pull this image into Lightroom, my post processing software, and click the white balance eyedropper tool on the gray card within the photo. Here is the result:
Wyoming License Plates
Not perfect yet, but much improved after one quick click.