Canon EOS 5D Mark III Instruction Manual page 108

3 Fine Adjustment of AF's Point of FocusN
Single focal length lens
Zoom lens
When shooting with the intermediate range (focal length) of a zoom lens, the AF's point of focus is corrected
relative to the adjustments made for the wide-angle and telephoto ends. Even if only the wide-angle or
telephoto end has been adjusted, a correction will be made automatically for the intermediate range.
108
4
Make the adjustment.
For a zoom lens, turn the <5> dial and

select the wide-angle (W) or telephoto (T)
end. Pressing <0> will turn off the purple
frame and make the adjustment possible.
Turn the <5> dial to adjust as

desired, then press <0>. The
adjustable range is ±20 steps.
Setting it toward "–:

point of focus in front of the standard
point of focus.
Setting it toward "+:

point of focus to the rear of the
standard point of focus.
For a zoom lens, repeat step 4 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.
Turn the <5> dial to select [Adjust by lens],

then press <0>. The menu will reappear.
5
Check the result of the adjustment.
Take a picture and play back the image

(p.244) to check the adjustment result.
When the resulting picture is focused in front of

the targeted point, adjust toward the "+:
When the resulting picture is focused behind the
targeted point, adjust toward the "– :
If necessary, do the adjustment again.

" will shift the
" will shift the
" side.
" side.