Canon EOS7DBODY User Manual (en)

 Custom Function SettingsN
C.Fn III -4     Lens drive when AF impossible
If autofocus is executed, but focus cannot be achieved, the camera can 
either keep trying to focus or stop.
0: Focus search on
1: Focus search off
Prevents the camera from becoming grossly out of focus as it attempts 
to focus again. Especially convenient with super telephoto lenses which 
can become extremely out of focus.
C.Fn III -5     AF Microadjustment
Normally, this adjustment is not required. Do this adjustment 
only if necessary. Note that doing this adjustment may prevent 
correct focusing from being achieved.
You can make fine adjustments for the AF’s 
point of focus. It can be adjusted in ±20 steps  
(-: Forward / +: Backward).
The adjustment amount of one step varies 
depending on the maximum aperture of the lens. 
Adjust, shoot (73), and check the focus. 
Repeat to adjust the AF’s point of focus.
With setting 1 or 2 selected, press the <B> button to view the register screen.
To cancel all the registered adjustments, press the <L> button.
0: Disable
1: Adjust all by same amount
The same adjustment amount is applied to 
all lenses.
2: Adjust by lens
An adjustment can be set individually for 
any particular lens. Adjustments for up to 20 
lenses can be registered in the camera. 
When a lens whose focus adjustment has 
been registered is attached to the camera, its point of focus will be 
shifted accordingly.
If adjustments for 20 lenses have already been registered and you want 
to register an adjustment for another lens, select a lens whose 
adjustment can be overwritten or deleted.