EF17-40mm f/4L USM : How to adjust the zoom on the lens
Article ID: ART151797 |
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Date published: 05/22/2015 |
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Date last updated: 02/03/2016 |
Description
How to adjust the zoom on the lens
Solution
![](/library/attachments/ServiceWareImages/LDImages/Lens_Manuals_Images/EF 17 40 f4L USM/Untitled-5.jpg)
To zoom turn the lens' zoom ring
- Be sure to finish zooming before focusing
- Changing the zoom ring after focusing can affect the focus