55mm Graduated Colour Filter set Graduated Grey + Blue + Orange Filter Kit Graduated color filters provide a gradual color transition for a smooth blending effect. Give your landscape and skin texture a more colorful touch. Perfect for changing the mood of a picture. Color filters are one of the least expensive and most effective ways to dramatically improve your shots. The filters are double-threaded, so you can stack your lens cap and other accessories as needed. Great for portraiture and outdoor scenes in strong sunlight. This filter is double threaded allowing additional filters to be screwed one over the other. Provides a gradual color transition for a smooth blending effect