Gradient filters allow progressively less light to pass toward one end, ideal for preventing blown out skies. The Orange and Blue gradient filters also enhance the image by adding a color tint. They are constructed from multi-coated glass optics and feature rotating aluminum rings.
Star filters create multiple points of light, or "stars", wherever a point light source, such as the sun, is visible in the frame. The effect is most pronounced in low light, becoming less noticeable under well-lit conditions.