EF24-70mm f/2.8L USM lens is a high-performance standard zoom lens for Canon EOS cameras. It features two aspherical lens elements and UD lens elements for clear, sharp images.
This manual provides safety precautions, handling instructions, and detailed operating procedures for the Canon EF24-70mm f/2.8L USM lens. It explains how to install and remove the lens, use the various autofocus and manual focus modes, and adjust the focus distance limits.
The document also includes a specification table with focal length, aperture range, angle of view, filter size, dimensions, weight, and compatible lens hood model. All information is presented in Chinese with occasional English terms. This manual is written in Chinese.
| Focal length | 24‑70 mm |
|---|---|
| Maximum aperture | f/2.8 |
| Minimum aperture | f/22 |
| Filter thread size | 77 mm |
| Maximum diameter | 83 mm |
| Length | 123.5 mm |
| Weight | 950 g |
| Compatible lens hood | EW‑83F |
USM indicates an ultrasonic motor, providing high speed and silent autofocus.
Mount the lens onto the camera body and twist clockwise to lock; to remove, twist counter‑clockwise while holding the lens body.
Avoid looking directly at bright light sources, keep the lens away from extreme temperatures, and store it in a sealed bag when not in use.
The EW‑83F lens hood is the recommended accessory.