The lens utilizes a 7-group, 11-element optical construction with built-in low-wavelength, -resolution lenses for exceptional resolution and exceptional resolution, ensuring faithful color reproduction and , detailed images. Double-sided multi-coating, one ED lens element, and one -refractive index lens effectively control chromatic aberration, ghosting, and flare. With a minimum focusing distance of 0.63m, close-up p ography remains exceptional. The F1.8 large aperture design ensures fast shutter speeds for indoors and in low-light conditions. The shallow depth of field creates a softer, more beautiful image, lighting the subject. The nine-blade aperture provides a softer bokeh effect. The shallow depth of field creates a more pronounced background blur in portraits, lighting the subject. Furthermore, while maintaining the same shutter speed, you can increase the shutter speed to freeze the moment. The STM stepping motor effectively and precisely controls the motor's start and stop based on pulse signals, resulting in smooth, continuous rotation and fast, accurate, and quiet autofocus. It's ideal for portraiture and video recording. USB firmware upgrade data interface There is a Type-C data interface at the bottom of the lens. You can download and upgrade the firmware and data from the official website to make the lens performance more powerful and accurate Specification: Lens type: prime lens Lens structure: 7 Groups 11 elements Diaphragm : 9 Max aperture: f1.8 Min aperture: f16 Focus Mode: Auto focus / Manual focus length: 50mm Minimum Focusing Distance: 0.63m Full-frame angle: Diagonal 46.4° Horizontal 39.4° Vertical 26.8° -C angle: Diagonal 31.3° Horizontal 26.2° Vertical 17.6° Filter size: φ58 (The product printed words may vary depending on the batch, but this does not affect use) Color: As shown<br /