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|Digital Gray Card Set Premium white balance card set & lanyard Works with any digital camera Perfect for both RAW & JPEG files Can be used in pre- or post-production Premium lanyard with detachable clip Why use a Gray Card Set? Real Color, as we humans see it, is the light that is reflected from an object. There are sources of light: such as the sun, the moon, artificial lighting, a camera flash, etc. This light strikes an object and it is reflected back to our eyes, which record it and pass it on to the brain, which interprets it for us. An apple looks red, or green, or yellow, because the chemicals in the skin of the apple reflect back these wavelengths. But the true color of an object changes as the subtle color tone of the light that shines upon it changes. For example: We see a piece of white paper in an office that is illuminated with florescent lighting. The paper looks white to us. We take the paper outside into the bright sun, it still looks white. We take the paper home with us and look at it under the tungsten lights that illuminate our house; it's white. We take it into the shade and it still looks white to us. It's not really pure white in each of these situations. Our brain knows that this paper should be white so it does some fancy interpolating for us. In reality, the paper in the office probably had a bluish hue to it, as it did in the shade too, and it had a reddish hue in our home, and was maybe slightly yellow in the sun. Our eyes simply adjust and send the right white balance to our brains. Cameras do not have the wonderful flexibility of the human brain. Although there is some great technology out there to make these machines produce the color that we SHOULD be seeing, by correcting the WHITE BALANCE of an image as the image is captured or processed, most of them are not 100% perfect all of the time. There will be times when an image has a COLOR CAST to it, maybe a slight magenta, a bit too red, or perhaps yello...|