Major function： 6.5mm 2.0 Meike optical lens is a manual focusing fisheye lens designed for full frame and APS frame. This lens, with simple and compact size and sound portability, can represent diversiform images during fast or near photography. Support to： APS-C Specifications: Lens type: Manual focusing fisheye lens Lens structure: 5 groups and 6 lenses Aperture range: F2.0-22 Focal range: 6.5mm Lens diameter: 61mm Length: 51.5mm Weight: 300g Coating: nano-technology multi-layer coating Full-frame Visual angle: diagonal 190° horizontal 190° vertical 190° APS-C Visual angle: diagonal 190° horizontal 190° vertical 190° Package Including: 1 x Lens 1 x Lens Bag.