This lens is an EF 100mm 2.0 USM.

Features

• Focal length and maximum aperture: 100 mm 1:2
• Lens construction: 8 elements in 6 groups
• Diagonal angle of view: 24°
• Focus adjustment: Rear focusing system with USM
• Closest focusing distance: 0.9m / 3ft
• Filter size: 58mm

The background blur is ideal for portraits. The USM autofocuses the lens quickly and quietly

This lens features a large aperture and compact size. The first lens group moves for rear focusing. And sharp, crisp pictures are obtained at all apertures. The background blur is ideal for portraits. The USM autofocuses the lens quickly and quietly.