Record data for non-CPU lenses attached using an optional mount adapter. Recording the focal length and maximum aperture of non-CPU lenses allows them to be used with some camera features normally reserved for CPU lenses, such as on-board vibration reduction.
| 
                                                       Option  | 
                                                   
                                                       Description  | 
                                                
|---|---|
| 
                                                       []  | 
                                                   
                                                       Choose a lens identifier.  | 
                                                
| 
                                                       []  | 
                                                   
                                                       Enter the focal length.  | 
                                                
| 
                                                       []  | 
                                                   
                                                       Enter the maximum aperture.  | 
                                                
