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Using Power Focus (PF) Mode on the EF 600mm f/4L IS II USM lens

Article ID: ART174594 | Date published: 05/31/2019 | Date last updated: 05/31/2019
 

Description

Instructions on how to set up and use the Power Focus (PF) Mode on the EF 600mm f/4L IS II USM lens

Solution

Power Focus (PF) Mode

Using the playback ring enables smooth focus change.
This is a useful feature for changing focus when shooting movies.

With the focus preset switch set to OFF, set the focus mode switch to PF.
Rotate the playback ring to change the focus.
When the playback ring is rotated in a certain direction, focus changes in the same direction as when the focusing ring is rotated.
You can make a 2-step change in focus shift speed depending on the angle that the playback ring is rotated to.
 

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