Setting the Focus Mode on the EF 400mm f/4 DO IS II USM lens
Article ID: ART174574 |
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Date published: 05/30/2019 |
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Date last updated: 05/30/2019 |
Description
Setting the Focus Mode on the EF 400mm f/4 DO IS II USM lens
Solution
Setting the Focus Mode
- To shoot in autofocus (AF) mode, set the focus mode switch to AF.
- To shoot in manual focus (MF) mode, set the focus mode switch to MF, and focus by turning the focusing ring. The focusing ring always works, regardless of the focus mode.
- To shoot in power focus (PF) mode, set the focus mode switch to PF when the focus preset switch is at OFF.
- See THIS ARTICLE for detailed information on Power Focus (PF) Mode.
![](/library/CANON/CITS_TECH_SUPPORT/Camera/Lenses/EF%20400mm%20F2.8L%20IS%20III%20USM/note.png) |
After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway and turning the focusing ring. (Full-time manual focus). |