Canon T5I 用户指南

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The kit lenses use a stepping motor that drives the focus lens. The 
motor controls the focus lens even 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 auto power off function. Therefore, users 
must be aware of the following points.

 

Manual focusing is not possible.

 

During zooming, inaccurate focusing may occur.

If not operated for a certain period of time, this lens will enter sleep 
mode in order to save power, apart from the camera’s auto power off. 
To exit sleep mode, press the shutter button halfway.
In sleep mode, the motor will not operate even if the camera is ON. 
Therefore, users must be aware of the following points.

 

Manual focusing is not possible.

 

During zooming, inaccurate focusing may occur.

When the camera is turned ON or when the camera is turned ON by 
pressing the shutter button halfway when the camera is OFF due to 
the auto power off function*

1

, the lens performs an initial reset of the 

focus lens.

 

Although the image in the viewfinder will appear out of focus 
during the initial reset, this is not a malfunction.

 

Although the shutter can be released during the initial reset, users 
must wait approx. 1 second*

2

 after the initial reset has completed 

before shooting.

*1: Applicable to the following EF-S lens compatible digital SLR cameras:

EOS 7D, EOS 60D, EOS 60Da, EOS 50D, EOS 40D, EOS 30D, EOS 20D, 
EOS 20Da, EOS REBEL T3i/600D, EOS REBEL T2i/550D, EOS REBEL T1i/
500D, EOS REBEL XSi/450D, EOS REBEL T3/1100D, EOS REBEL XS/
1000D, EOS DIGITAL REBEL XTi/400D DIGITAL, EOS DIGITAL REBEL XT/
350D DIGITAL, EOS DIGITAL REBEL/300D DIGITAL

*2: The initial reset time varies depending on the camera used.

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