K&F Concept Blue Streak Filter (4 x 5.65")

The 4 x 5.65" Blue Streak Filter from K&F Concept is a 28-layer multicoated 4mm optical glass matte box filter that's water repellent, oil resistant, and scratch resistant. It produces cool brushed images, adds a layer of blue transparent lines, and creates visual effects such as blur, gradient, and distortion. A protective leather filter pouch with sponge lining is included.