Lightweight and portable: ultra-lightweight 170g design, easy to carry anywhere, making it ideal for travel and street photography. Advanced optical performance: 56mm F1.7 aperture, 9 groups, 11 elements, 4 ED and 3 high refractive elements for sharp, clear images and beautiful bokeh. Fast and quiet autofocus: the STM motor ensures fast and quiet focusing; even beginners can get accurate images effortlessly.Durable and reliable: waterproof and anti-fouling coating on the front lens, durable metal mount made to withstand daily use and challenging environments. Versatile compatibility: 52mm diameter supports standard filters; Type-C interface allows easy firmware upgrades to keep your lens working at its best. Optimized for video: Minimal focus breathing, internal focus design and stable performance make it a reliable choice for content producers. In The Box AF 56mm F1.In The In The Box F1.7 E Lens Cover Front Lens Cover Rear Lens Cover Storage Bag User Manual Product specifications Lens mount: E-mount Lens elements: 11/9 Focal length: 56mm Viewing angle: 29.8° Aperture: F1.7 -F16 Number of aperture blades: 9 Firing distance: 0.55m-∞ Focusing mechanism: STM Focus Mode: MF, AF Maximum Magnification: 0.11x Lens Size: Φ65 x 54.3 mm Weight: 170 g Filter Size: Φ52 mm 85 mm (full-frame equivalent); Excellent low-light performance; Four HR elements, three Elements;Supports Exif data transfer;Firmware updates via USB-C port