The 49mm Warp Filter from PolarPro distorts the outer edges of your frame while maintaining sharp center focus. Constructed with Cinema Series glass and an aluminum ring, the filter features reflection-, scratch-, and fingerprint-resistant coatings designed to extend its lifespan. Unique in its design, this filter's effect shifts, with smoother warping from the center at wide open apertures and more edge distortion at wider focal lengths. Portrait, abstract, and lifestyle photographers can use this filter to create dramatic light effects in-camera.