This lens is an EF 85mm 1.2 L USM.See full specification
Focal length and maximum aperture: 85 mm 1:1.2
Lens construction: 8 elements in 7 groups
Diagonal angle of view: 28°-30°
Focus adjustment: Front group linear extension system with USM
Closest focusing distance: 0.95m / 3.1ft
Filter size: 72mm
With a large maximum aperture of f/1.2, this is the fastest 85mm telephoto lens in its class. One aspherical lens element and two high-refraction elements give sharp images with little flare even at the maximum aperture.The floating system corrects coma for high image quality.