Sirui’s 35mm f/1.8 1.33x Anamorphic lens for Canon RF mount is a sharp and fast anamorphic lens designed to bring a cinematic look to your videos. With its 1.33x Ratio, the lens takes full advantage of the 16×9 sensor crop that these cameras shoot video in to produce a 2.4:1 aspect ratio that is synonymous with theatre movie experiences.