Choose whether the lens focus ring can be used for manual focus in autofocus mode.
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                                                          Option  | 
                                                      
                                                          Description  | 
                                                   
|---|---|
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                                                          Autofocus can be over-ridden by rotating the lens focus ring (autofocus with manual override). The focus ring can be used for manual focus while the shutter-release button is pressed halfway. To refocus using autofocus, lift your finger from the shutter-release button and then press it halfway again.  | 
                                                   
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                                                          []  | 
                                                      
                                                          The lens focus ring cannot be used for manual focus while autofocus mode is selected.  | 
                                                   
