Then our palette is represented by four channels instead of three. We can convert our image to a CMYK color mode ( Image > Mode > CMYK). This is because the image is composed mostly of this great blue sky reflected on the water. The Blue channel is brighter than the Green or Red channels. The darker areas represent less color.įor instance, let’s look at the images above and below. The brighter areas of the color channel contain more color. We will start in RGB mode ( Image > Mode > RGB).Įach color in the color mode is now represented by a color channel represented by a grayscale image. You can find Photoshop’s color channels palette window through the top file menu. It is represented by percentage values and is associated with printer inks. It is created by combining the colors Cyan, Magenta, Yellow, and Key (Black) in different amounts. The CMYK color mode is a subtractive process.
This mode is associated with digital displays on monitors, cameras, and scanners. It is created by combining different amounts of red, green, and blue. The RGB color mode is an additive process. The RGB and CMYK color modes are the most used ones. We can use a few color modes in Photoshop, like Grayscale, Index, Lab, or Multichannel. This process is named “Trichrome.” It is a result of thousands of years of human evolution and environmental adaptation. And we process the number of activated cones and the strength of the signal. The light reflected by a yellow object in daylight stimulates the red and green cones. Cones contain color-detecting molecules with red, green, and blue photopigments. Two different types of cells inside our eyes are responsible for this process-rods, and cones. It is estimated that we can distinguish up to 10 million colors. And it’s in a wavelength between 400 and 700 nanometers. The visible spectrum for humans is between ultraviolet light and red light. Then we can understand how a color channel works, Understanding Light and Color Buy from Unavailable How Do Photoshop Channels Work?įirst, it is important to understand the relationship between light, color, and how our eyes see it.
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