What could be the Function of a Bayer Filter in the Digital Camera? Understanding the Science behind Photography Bayer filter is a color filter used in most digital cameras. It plays a fantastic role in sending a clearer output with a captured image. A Bayer filter comprises RGB colors with specific color pattern arranged in grid which corresponds to the physiologic vision of the human eyes. A Bayer filter is surely an selection of color filters that is utilized to alternately arrange the colors red, green and blue (RGB) in the grid. The Bayer filter is often suited for digital photosensors mainly when considering creating a colored image. Unique to this sort of filter is its ability to filter only specific colors for example red, blue and green.