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3 Custom Function Settings
C.Fn III -7 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, and check the focus,
then 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.
When you adjust, shoot, and check the focus to make the adjustment, set the
image size to JPEG Large and the JPEG quality (compression) to 8 or higher.
It is best to make the adjustment at the actual place where you will shoot.
This will make the adjustment more precise.
With setting 2, if an Extender is used, the adjustment will be registered
for the lens and Extender combination.
AF adjustment cannot be done during Live View shooting in Live and u
Live modes.
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