Canon EF 70-300mm f/4-5.6 IS USM lens is a high-performance telephoto zoom lens with image stabilizer designed specifically for EOS cameras.
This manual covers safety precautions, proper handling, and installation of the EF70-300mm f/4-5.6 IS USM lens. It explains how to mount and dismount the lens without damaging contacts, and describes the functions of the Image Stabilizer (IS) and Ultrasonic Motor (USM).\n\nOperating instructions include focusing modes, zoom operation, and how to enable or disable the IS system. Technical specifications such as focal length range, maximum aperture, filter size, weight, and dimensions are listed for reference. This manual is written in Chinese.
| Focal length | 70-300 mm |
|---|---|
| Maximum aperture | f/4-5.6 |
| Filter diameter | 58 mm |
| Dimensions | 765 × 142.8 mm |
USM indicates an Ultrasonic Motor for fast, silent focusing.