Af 40mm F2.5, Viltrox Air series lightweight full-frame series introduces a 40mm focal length, efficient and precise autofocus system to capture wonderful moments, so that everyone can enjoy the fun of photography. Covers the full-frame image field and matches more models. Compact and lightweight lens body, easy to carry. The versatile 40mm focal length is ideal for daily shooting and travel.Compact Lightweight Full-Frame Auto Focus Lens - Af 40mm F2.5 ZFull-Frame Sensor FormatCovering full-frame mirrorless cameras, it has wider applicability and is enough to adapt to more models of mirrorless cameras.Lightweight DesignMade of specially made lightweight materials, the Af 40mm F2.5 is extremely lightweight, weighing less than a mobile phone.F2.5 Large Aperture Soft and Beautiful Bokeh7 aperture blades create round and dreamy light spots, beautiful bokeh, and artistic expression. Ideal for complex shooting environments and low-light conditions.