Canon EOS 90D Advanced User's Manual page 579

Single focal length lens
Zoom lens
Fine Adjustment of AF Position (AF Microadjustment)
4
Make the adjustment.
For a zoom lens, select the wide-angle

(W) or telephoto (T) end. Pressing < 0 >
will turn off the orange frame and make
the adjustment possible.
Set the adjustment amount, then press

< 0 >.
Setting it toward "–: " will shift the point

of focus in front of the standard point of
focus.
Setting it toward "+:

of focus to behind the standard point of
focus.
For a zoom lens, repeat this procedure

and adjust it for the wide-angle (W) and
telephoto (T) ends.
After completing the adjustment, press

the < M > button to return to the
screen in step 1.
5
Check the result of the adjustment.
Take a picture to check the adjustment

result.
Repeat the adjustment as necessary.

" will shift the point
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