Small body, lightweight The lens is specially designed for RF mount mirrorless cameras. The maximum diameter and length of the lens is about 67*72mm and the net weight is only about 280g. The lightweight design is portable for long-term hand-held shooting and video recording. Supports custom setting of the control ring Users can assign common functions such as aperture, shutter speed, and ISO sensitivity to the control ring according to their needs. Rotating the control ring can quickly adjust the corresponding parameters, which can help you greatly improve the convenience of operation and increase the efficiency of creation. Note : 1. The product has the control loop function enabled by default. If you need to turn off or turn on this function again, please check the corresponding option through the upgrade software and update the firmware. 2. After turning on the control ring function, the control ring can be used normally only when the focus mode switch of the lens is set to ?AF?. Equipped with AF/MF focus mode switch, supports full-time manual focus Through the AF/MF focus mode switch, you can quickly switch the focus mode. After the autofocus is completed, you can manually adjust the focus position without switching the focus mode to achieve the desired focus effect, which is easy and efficient. Note: The full-time manual focus function can only be used normally after enabling the corresponding settings on the camera. For detailed operations, please refer to the camera manual. The lens mount is equipped with a dust- and water-resistant rubber ring The lens mount is equipped with a dust- and water-resistant rubber ring, which can effectively resist the entry of dust and water droplets. Note: The mount position of this lens only has a certain degree of waterproof performance but is not completely waterproof. If you are shooting in rainy weather, please try not to get wet. Quiet CNC Stepping Motor Integrated Digital stepping motor (DSM) has a fast start-stop response, high focusing accuracy, and quieter focusing actions, which is suitable for photo shooting and video recording. F/2 Large Aperture With an F/2 large aperture, it?s easy to get a soft blur effect. You can also use low sensitivity and higher shutters to shoot in a low light environment. 9 Optical Lenses in 8 Groups with Nano-multilayer Coating The structure is composed of 9 elements in 8 groups with nano-multilayer coating, which effectively improves the light transmittance and suppresses back-light ghosts and glare. Aspheric Lens*1 Various aberrations can be compensated by an aspherical lens integrated. Low Dispersion lens*1 Equipped with a low-dispersion glass lens, which can effectively suppress the dispersion problem caused by wide-angle. 7 Circular Aperture Blades The lens is designed with 7 circular aperture blades. It can shoot circular diffuse spots. It can also take pictures with 14-star effects if the aperture is appropriately reduced. USB Firmware Upgrade Equipped with a USB Type-C interface, you can download the latest firmware to upgrade the lens, as well as the control ring. Metal Bayonet and Contacts The use of high-precision metal bayonet and gold-plated contacts effectively improves signal conductivity and corrosion resistance. At the same time, it allows the camera and lens to maintain reliable communication and realizes functions such as auto-focus, aperture control, and EXIF information transmission. Specifications: Mount RF Mount Lens Frame Full Frame Angle Approx. 61.3? Lens Structure 9 elements in 8 groups Aperture Blade 7 blades Minimum Aperture F/16 Minimum Focusing Distance Approx. 0.35m Maximum Magnification Approx. 0.13? Drive System DSM Stepping Motor Filter Diameter/Number of Available 52mm/1 Maximum Diameter and Length Approx. ?67?72mm Weight Approx. 280g