This 33mm APS-C autofocus Sniper Series Lens, SIRUI's first autofocus lens, isequivalent to a 50mm full-frame lens and is suitable for human, scenic, street, travel, indoor shooting, etc. E/X/Z mounts are included and there are three optional colors - black, white and silver. With the eye AF function of supported cameras, you can easily focus on human eyes even when the subject is moving fast. When recording video, the subject is always recognized and tracked, contributing to smooth, high-quality production. The Lens features an ultra-fast F1.2 aperture with shallow depth of field, high bokeh quality and subject isolation. A fast shutter speed improves shooting efficiency while helping to capture brilliant moments in time. The STM motor design gives you an impressive autofocus experience. Closer but quieter. ED glass and high refractive index glass have been added to reduce the lens size while providing excellent optical performance with well-controlled flare and ghosting. Minimal focus breathing and tightly controlled aberration allow you to focus on the subject from start to finish. The 11-blade design provides smooth and beautiful bokeh. Includes a petal-shaped lens hood to reduce vignetting and prevent unwanted flare from entering the Lens. It's super easy to attach and remove lens hoods. Identical gear position, uniform 58mm filter thread and identical characteristics allow you to create smooth, high-quality productions. Even when shooting with a stabilizer, you can change lenses quickly without readjusting the accessories.