Understanding red, blue, and green lenses

When you work with red and blue images, the blue color in glasses with red and blue lenses is actually cyan, not blue. Red and cyan are complementary colors, producing the best separation because they filter each other out more efficiently. When you work with red and green images, it may appear that the green is not as bright as the red. However, viewing the images with red and green lenses produces an even result because green has a higher luminance value than red.