Feature: 1. 225 Degree Wide Angle: The lens has a 225 degree ultra wide circular angle of view, which can cause a strong perspective effect when shooting, and the images captured have a amazing and infectious effect, while the fisheye lens has a long depth of field. 2. Professional Design: The fisheye lens consists of 10 glass elements in 8 groups. The closest focusing distance is 0.085m/3.34 inches. The fisheye lens is made of alloy and optical glass with a good touch. 3. 360 Degree Panorama: Take 360 degree panoramic photos with our circular fisheye lens in just two shots. It is convenient and easy to use. 4. F2.8 Aperture: The use of circular fisheye lens can also be photographed "sky like a dome" scenery, so that people produce a sense of heaven and earth. 5. Compatible Models: Our circular fisheye lens is suitable for M6 M200 M50 M100 and other models. Please confirm the model number of the camera before purchasing. Specification: Item Type: Fisheye Lens Material: Alloy Optical Glass Weight: Approx. 366g/12.91oz Focal Length: 4mm/0.16in Maximum Aperture: F2.8 Minimum Aperture: F16 Frame: APS C Aperture Blades: 7 Optical Structure: 8 groups of 10 blades Shooting Angle: 225 degrees Focusing Method: Manual focus Aperture Ring: Stepless aperture Lens Stabilization: Without anti shaking Mount: for M mount Compatible Models: For M6 M200 M50 M100 and other models. Package List: 1 x Front Lens Cover1 x Rear Lens Cover1 x Lens1 x Instruction Manual