Feature: 1. Applicable Models: 4mm F2.8 circular fisheye lens is suitable for E mount, such as for FX3 A7S A7S2 A7S3 A7M2 A7M3 A7M4 A1 A7 A9 A9II A7R A7R2 A7R3 A7R4 A7RIV A7C A6400 ZVE 10. 2. 225 Degree Wide Angle: 225 degree ultra wide viewing angle, which can create a strong perspective effect when shooting, and the pictures taken have an impressive appeal. At the same time, the fisheye lens has a long depth of field. 3. Professional Design: Consists of 8 groups of 10 glass elements. The nearest focusing distance is 0.085m/3.34 inch. The camera lens is made of alloy, which has a smooth and good touch. 4. Complete 360 Degree Panorama Twice: 4mm F2.8 circular fisheye lens takes 360 degree panoramic photos, which only requires two shots. 5. F2.8 Aperture: The 4mm F2.8 fisheye lens can also be used to shoot the scene of "the sky is like a dome", which makes people feel carefree. Specification: Item Type: 4mm F2.8 Circular Fisheye Lens Material: Alloy, Optical Glass Color: As Pictures Shown Weight: Approx. 366g / 12.9oz Focal Length: Approx. 4mm / 0.2in Maximum Aperture: F2.8 Minimum Aperture: F16 Frame: APS C Aperture Blades: 7 Optical Structure: 8 Groups of 10 Pieces Shooting Angle: 225 Degree Focusing Mode: Manual Focusing Aperture Ring: Stepless Aperture Camera Anti Shake: Without Anti Shake Mount: E Mount Applicable Models: for E Mount, such as for FX3 A7S A7S2 A7S3 A7M2 A7M3 A7M4 A1 A7 A9 A9II A7R A7R2 A7R3 A7R4 A7RIV A7C A6400 ZVE 10. Package List: 1 x Front Lens Cover 1 x Rear Lens Cover 1 x Lens 1 x Manual