【STM Stepping Moto】TTArtisan AF 56mm F1.8 CF lens adopts the STM+leading screw stepping motor, which is small in size and smooth in focusing. 【Eye Recognition Focus】 Accurate and agile eye tracking makes it easy to capture wonderful moments when taking photos, and helps to shoo smooth images when recording videos. 【Interface for Firmware Upgrade】The firmware upgrade of the lens can be carried out through the typer-c interface to improve the performance. Different from the common design of the interface on the lens, TTArtisan designs the interface on the back cap, which improves the aesthetics of the lens. 【Metal Material】 The lens barrel and mount are made of aviation aluminum, and the metal texture perfectly matches the retro vibe of Fuji cameras. 【F1.8 Large Aperture, Soft Bokeh】F1.8 aperture allows more light to enter the camera, which is beneficial for low-light photography. In addition, the large aperture brings objects in the foreground into focus and blurs the background. Item Weight 15.8 ounces Manufacturer TTARTISAN Item model number TT-56mm F1.8-E-0411 Product Dimensions 2.44 x 2.55 x 2.55 inches