Half color, half clear with a graduated density transition for a smooth blending of color Photographic effects - Add color to a selected part of the scene (with color imaging) Circular Filter for adjustability Double threaded to stack additional filters such as: ND, UV, etc. Includes Filter Case
Color:red,orange,yellow,green,blue,purple,gray
Size:37mm-105mm
Functions
Graduated Grey can lighten parts of the image, like the foreground above. You could use more overall exposure when the overly bright parts are dimmed through the grey part of the filter.
Gradual Orange/ Red is used to enhance the color of the image, making the scenery more bright and vibrant. It's suitable for photographing sunset and autumn leaves.
Gradual Blue can deeper the blue color of sky or lake when it's cloudy without affecting the ground color, realize color balance.