Canon EF24-105mm f/3.5-5.6 IS STM User Manual page 5

Shooting Precautions
The EF24-105mm f/3.5-5.6 IS STM utilizes a stepping motor that drives the focus lens.
The motor also controls the focus lens during zooming.
1. When the camera is OFF
The motor does not operate while the camera is OFF or when the camera is OFF due to the use of the auto power
off function. Therefore, users must be aware of the following points.
●
Manual focus adjustments are not possible.
During zooming, delayed focus will occur.
●
2. When the lens is in sleep mode
If not operated for a certain period of time, this lens will enter sleep mode in order to save power. Sleep mode
differs from when the camera is OFF due to the use of the auto power off function.
In this state, the motor will not operate even if the camera is ON. Therefore, users must be aware of the following
points.
●
Manual focus adjustments are not possible.
During zooming, delayed focus will occur.
●
To exit sleep mode, press the shutter button halfway.
●
ENG-4