I figured how to set the manual white balance on my camera for shady situations and how to have the camera meter a white balance card to use as a standard for that shot or series of shots for that session. Now I am looking online for white balance cards.
There are sets with black, white and grey cards. There are different hues and percentages of grey cards.
Is there a standard white balance card to use? What are the solid white and solid black cards for?
I'm just trying to find a card I can use to adjust the camera for low light and shady situations.