The Canon EF70-200mm f/4L USM lens is a compact high-performance telephoto zoom lens that features fluorite and UD lenses to create a clear image with a striking picture. Equipped with a ultrasonic motor (USM) that achieves high-speed and silent autofocus.
The manual introduces the Canon EF70-200mm f/4L USM lens, describing its key features such as the 70‑200 mm focal length range and the fast f/4 maximum aperture. It also explains the USM (Ultrasonic Motor) focusing system and how to mount and use the lens on compatible Canon EF cameras.
Safety precautions, handling guidelines, and detailed technical specifications are included to help users achieve optimal performance while protecting the lens and camera. The document also provides reference data such as focal length, aperture, and motor type for quick reference.
| Focal length | 70-200mm |
|---|---|
| Maximum aperture | f/4 |
| Focusing motor | USM |
The lens covers a focal length range of 70‑200 mm.
The maximum aperture is f/4.
The lens uses a USM (Ultrasonic Motor) focusing system.