Specifications:

Brand Canon
Focal Length 70 – 300mm
Aperture Maximum: f/4 – 5.6
Minimum: f/32 – 45
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Angle of View 34° – 8° 15′
Minimum Focus Distance 3.94′ (1.2 m)
Magnification 0.25x
Maximum Reproduction Ratio 1:4
Optical Design 17 Elements in 12 Groups
Diaphragm Blades 9, Rounded
Image Stabilization Yes
Autofocus Yes
Filter Thread Front: 67 mm
Dimensions (DxL) Approx. 3.15 x 5.73″ (80.01 x 145.54 mm)
Weight 1.56 lb (710 g)
Package Weight 1 kg
Box Dimensions (LxWxH) 9.6 x 5.4 x 5.3″

Features:

Telephoto zoom designed for full-frame Canon EF-mount DSLRs, this lens is also suitable for use with APS-C models where it provides a 112-480mm equivalent focal length range.

One UD element is featured in the optical design to noticeably reduce chromatic aberrations and color fringing for increased clarity and improved color fidelity.

Lens Information Display on the top of the lens barrel clearly highlights focusing distance, focal length, and Image Stabilizer amount.

NANO USM system utilizes both a ring type USM and an STM mechanism to realize quick and accurate focusing that is also smooth and near-silent to suit both photography and video applications. This focusing system also affords full-time manual focus control when working in the one-shot AF mode.

An Image Stabilizer compensates for up to four stops of camera shake for sharper handheld shooting when working in difficult lighting conditions and with slower shutter speeds.

A circular nine-blade diaphragm contributes to a pleasing bokeh quality when working with selective focus and shallow depth of field techniques.