Beautiful bokeh meets low-light performance in an ultra-compact, lightweight lens with incredible sharpness.Fast F1.4 maximum apertureThe maximum aperture of F1.4 provides excellent low-light performance, and creates beautiful background blur to separate subjects from the environment.Dust and splash resistant mountRubber sealing at the lens mount helps to keep dust and other foreign bodies from entering the lens or the camera's sensor chamber.tsc (Thermally Stable Composite)Parts made with Tsc versus aluminum deform less, further contributing to the high-precision construction of the lens.Compatible with In-CameraThis function performs in-camera corrections of peripheral illumination, chromatic aberrations, distortion, and more, to further enhance image quality (available on supported cameras only).