Cokin WA1T122 A Series Blue Graduated Filter

The Cokin A122 Graduated Blue Filter is a creative tool for photographers who want to add a cool blue color wash to portions of their images without post-processing. As a graduated filter, the color transitions smoothly from a blue tint on one half to fully clear on the other, making it ideal for enhancing overcast or pale skies while preserving natural tones in the landscape or subject below. The filter slides into a Cokin A Series holder, which allows you to adjust the position of the graduation line relative to the horizon or any other compositional element in your frame.

Constructed from CR-39 organic glass — a material originally developed for prescription eyewear — the A122 delivers solid optical transmission and minimal distortion. CR-39 is significantly lighter than mineral glass and offers high impact resistance, so the filter can be handled confidently in outdoor shooting conditions without fear of shattering. While the A Series format is compact and well-suited to standard and short telephoto lenses, photographers shooting with ultra-wide-angle glass should be aware that the smaller filter dimensions may introduce vignetting at the widest focal lengths.