The 7artisans 4mm f2.8 fisheye lens has a unique 225° field of view, creating a circular fisheye perspective on an APS-C camera. Photographers only need to take 2-3 photos to create a 360° panoramic image. The lens weighs only 7.09 oz (201 g), making it very portable, allowing photographers to take creative photography anytime, anywhere. The lens can also be mounted on the DJI Inspire X5 camera to create a unique perspective you have never seen before. F2.8 Large Aperture - Maximum aperture F2.8, larger light in take, more room for creativity, with ultra-wide angle, starry sky and night shooting can also have a better experience Ultra Wide Angle of View - The 4mm F2.8 is fisheye lens with 225 degree ultra wide angle circle. Enables a strong perspective effect of 360 degree panoramic view when shooting close to the subject Compact and Lightweight - Exqusite full metal body, durable, lightweight apperance and 210g weighs. The closest photography distance is only 0.085m, the maximum magnifi-cation of 0.11 De-Click Aperture - 10 elements in 8 groups optical structure, built-in 7 piece diaphragm blades, it allows you smooth de-click the aperture to get a perfect creativity photos