EF 16-35mm f/2.8L USM is a high-performance ultra-wide-angle zoom lens with aspherical lens and UD lens that makes images clear and impressive. The lens also features a ultrasonic motor for silent and high-speed autofocus.
This manual explains how to install, operate, and maintain the Canon EF 16-35mm f/2.8L USM ultra‑wide‑angle lens. It covers safety warnings, lens parts, and recommended accessories.
Key sections include lens installation and removal, focus‑mode selection, focusing and zoom ring use, infinity‑focus adjustment, infrared index setting, filter and hood attachment, and detailed specifications of the lens optics and dimensions. This manual is written in Chinese.
| Focal length / maximum aperture | 16‑35 mm f/2.8 |
|---|---|
| Lens construction | 10 groups, 14 elements |
| Minimum aperture (T‑stop) | T2.2 |
| Minimum focusing distance | 0.28 m (0.9 ft) |
Turn the focus‑mode switch to the AF position for auto‑focus, or to the MF position for manual focus.
Align the dust‑cover mark with the lens mark and rotate clockwise; rotate counter‑clockwise to remove.
Rotate the distance ring slightly beyond the normal infinity mark to compensate for temperature‑induced focus shift.