The Sirui 50mm f/1.8 Anamorphic 1.33x is designed for APS-C cameras and increases the horizontal FOV by 33% compared to traditional APS-C 50mm lenses. The result is equivalent to a wider APS-C 37.5mm lens. After decompression, the recorded image appears in a 2.4:1 anamorphic format in a 16:9 setting. This fast f/1.8 lens is designed with an aluminum housing and features optics with multi-layer Nano coatings. It features renowned Schott glass optical elements and provides rectangular aspect ratios, large horizontal lens flares, and oval bokeh.