The lens utilizes a 7-group, 11-element optical construction with built-in low-wavelength, high-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 high-refractive index lens effectively control chromatic aberration, ghosting, and flare. With a minimum focusing distance of 0.63m, close-up photography 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, highlighting the subject. The nine-blade aperture provides a softer bokeh effect. The shallow depth of field creates a more pronounced background blur in portraits, highlighting 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 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 blades: 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: 58 (The product printed words may vary depending on the batch, but this does not affect use) Color: As shown Material: ABS Package Contents: 1 x f1.8 lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.