The Canon EF70-300mm f/4.5-5.6 DO IS USM lens is a high-performance, compact telephoto zoom lens for Canon EOS cameras, equipped with DO (Diffractive Optical) elements and an image stabilizer. The innovative DO optical elements combined with fluorite and aspherical lens elements help achieve high quality and compactness.
This manual covers the Canon EF70-300mm f/4-5.6 DO IS USM telephoto zoom lens, a high‑performance, compact lens for EOS cameras featuring DO optics and image stabilization. It explains how to install, operate, and maintain the lens safely.
Key sections include safety precautions, focus mode switching, zoom‑ring lock operation, image stabilizer settings, and a full specifications table. The guide also offers tips for handling the lens in extreme temperatures and cleaning the electronic contacts. This manual is written in Chinese.
| Optical construction | 12 groups, 18 elements |
|---|---|
| Minimum focusing distance | 0.19 m at 300 mm |
Yes. After autofocus, half‑press the shutter button and turn the focus ring to adjust focus manually.
Place the lens in a sealed plastic bag before moving it from a cold to a warm environment, then let it warm gradually before removing the bag.