Key facts
- Brand
- Canon
- Model
- 2.8L USM
- Documents
- 4
- Languages
- ZH
- Last added
- 2012-03-20
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Canon EF 16-35mm f/2.8L USM Lens User Manual
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.
Canon 2.8L USM specifications
| 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) |
All Canon 2.8L USM documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
Can I look at the sun through this lens?
No. Do not view the sun or bright light sources through the lens or with the lens cap off, as it can damage eyesight.
How should I clean the electronic contacts on the lens?
Use a soft cloth to gently wipe any dirt or fingerprints from the contacts.
How do I set the focus mode to auto or manual?
Turn the focus‑mode switch to the AF position for auto‑focus, or to the MF position for manual focus.
How do I install the front dust cover?
Align the dust‑cover mark with the lens mark and rotate clockwise; rotate counter‑clockwise to remove.
Can I look at the sun through the lens?
No. Looking at the sun or bright light sources through the lens can damage your eyesight.
How should I prevent condensation when moving the lens between cold and warm environments?
Place the lens in a sealed plastic bag before moving it, allowing it to warm up or cool down gradually while still sealed.