Canon EOS-1D C EOS 1D X Instruction Manual - Page 97

3 Customizing AF Functions Lens drive when AF impossible If focus cannot be achieved with autofocus, you can have the camera keep searching for the correct focus or have it stop searching. ON: Continue focus search If focus cannot be achieved with autofocus, the lens is driven to search for the correct focus. OFF: Stop focus search If autofocus starts and the focus is far off or if focus cannot be achieved, the lens drive stops. This prevents the lens from becoming grossly out of focus due to focus searching. Super telephoto lenses can become grossly out of focus during continuous focus search, taking more time to achieve focus the next time. Therefore, setting [Stop focus search] is recommended for super telephoto lenses. Selectable AF point You can change the number of manually selectable AF points. With automatic AF point selection, all 61 AF points will remain active regardless of this setting. : 61 points All 61 AF points will be manually selectable. : Only cross-type AF points Only cross-type AF points will be manually selectable. The number of selectable cross-type AF points will differ depending on the lens. 97