Canon EF lens user manual, introduces the composition, installation and disassembly, focus mode, aperture setting, infinity focus mark, infrared indicator mark, filter, etc.
This manual provides safety precautions, handling instructions, and detailed usage notes for Canon EF series USM lenses. It covers topics such as protecting the lens from sunlight, preventing condensation, cleaning contacts, and installing accessories like filters and rear caps.
The document also includes a specifications table for each lens model, describing focal length, maximum aperture, dimensions, and weight, as well as diagrams for proper installation of rear filters and shade devices. This manual is written in Chinese.
| EF14mm f/2.8L USM focal length | 14 mm |
|---|---|
| EF20mm f/2.8 USM focal length | 20 mm |
| EF24mm f/1.4L USM maximum aperture | f/1.4 |
| EF28mm f/1.8 USM maximum aperture | f/1.8 |
| EF50mm f/1.4 USM maximum aperture | f/1.4 |
Do not look through the lens or camera at the sun or any bright light source, as it can damage your eyesight.
Place the lens in a sealed plastic bag before moving it between temperature extremes, then let it warm up gradually before use.
Use a soft cloth to gently clean any fingerprints or debris from the contacts.
Trim the filter to 31 mm × 31 mm, align it with the white bracket, and slide it into the mount.