Canon EOS 5D Mark III User manual

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Customizing AF Functions*
AF5
During manual AF point selection, the selection can either stop at the
outer edge or it can move to the opposite AF point. This function works
in AF area selection modes other than 61-point automatic selection AF
and Zone AF. (It works in 61-point automatic selection AF only with AI
Servo AF.)
_o_: Stops at AF area edges
Convenient if you often use an AF point
along the edge.
_oot: Continuous
Instead of stopping at the outer edge, the
selected AF point continues to the
opposite side.
You can set whether or not to display the AF point(s) in the following
cases: 1. When selecting the AF point(s), 2. When the camera is ready
to shoot (before AF operation), 3. During AF operation, and 4. When
focus is achieved.
_: Selected (constant)
The selected AF point(s) is always
displayed.
I_!tl_www:All (constant)
All 61 AF points are always displayed.
_,_6: Selected (pre-AF, focused)
The selected AF point(s) is displayed for 1,2, and 4.
,_6 Selected (focused)
The selected AF point(s) is displayed for 1 and 4.
OFF: Disable display
For 2, 3, and 4, the selected AF point(s) will not be displayed.
102

Customizing AF Functions*
If [$eJected (pre_AF, focused)] 0[ [selected (focused)] is setl the AF point
will net be displayed even when focus is achieved with AI Serve AF.
The AF points and grid in the viewfinder can be illuminated in red when
focus is achieved. AUTO: Auto
The AF points and grid are automatically
illuminated in red under low light.
ON: Enable
The AF points and grid are illuminated in
red regardless of the ambient light level.
OFF: Disable
The AF points and grid are not
illuminated in red.
The Settinghereis n0t applied t0the electronic ieve dsplay (p159)in the
Viewfinder.
When Y0upress the <r:iq> buttonl the AF pointsandgrid Willbe illuminated
!nred rega[dless 0fthis setting.
You can make fine adjustments for the AF's point of focus. For details,
see "Fine Adjustment of AF's Point of Focus" on page 104.
103

Fine Adjustment of AF's Point of Focus_ _
Fine adjustment of the AF's point of focus is possible for viewfinder
shooting and Live View shooting in the Quick mode. This is called "AF
Microadjustment'. Before making the adjustment, read "Notes for AF
Microadjustment" on page 109.
O Normally, this adjustment is not required. Do this adjustment
only if necessary. Note that doing this adjustment may prevent
correct focusing from being achieved.
Adjust All bySameAmOunt
Set the adjustment manually by adjusting, shooting, and checking the
result. Repeat this until the desired adjustment is made. During AF,
regardless of the lens used, the point of focus will always be shifted by
the adjustment amount.
_Select [AF Microadjustment].
_ Under the [AFS] tab, select [AF
Microadjustment], then press <8>.
Select [All by same amount].
_ Turn the <0> dial to select [All by
same amount].
,_,/_Press the <INFO.>button.
_y,,The JAil by same amount] screen
wiii appear.
1O4

Fine Adjustment of AF's Point of Focus *
_Make the adjustment.
® Turn the <0> dial to make the
adjustment. The adjustable range is
_+20steps.
® Setting it toward "-:'_" will shift the
point of focus in front of the standard
point of focus.
® Setting it toward "+:_" will shift the
point of focus to the rear of the
standard point of focus.
® After making the adjustment, press
<_'_ >.
® Turn the <0> dial to select [All by
same amount], then press <8>.
The menu will reappear.
5Check 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 "+:_" side. When the
resulting picture isfocused behind the
targeted point, adjust toward the "-
:'_" side.
_ If necessary, do the adjustment
again.
0 if [Ail bY same amount] iS seiectedi AE adjustment will nOt be pOssible for
the wide:ang!e and telephoto ends of zoom lenses,
105

Fine Adjustment of AF's Point of Focus'*
Adjust by Lens
You can make the adjustment for each lens and register the adjustment
in the camera. You can register the adjustment for up to 40 lenses.
When you autofocus with a lens whose adjustment has been registered,
the point of focus will always be shifted by the adjustment amount.
Set the adjustment manually by adjusting, shooting, and checking the
result. Repeat this until the desired adjustment is made. If you use a
zoom lens, make the adjustment for the wide-angle (W) and telephoto
(T) ends.
¢_ Select [Adjust by lens].
_ Turn the <0> dial to select [Adjust
by lens].
*} Press the <INFO.>button.
_y,,The [Adjust by lens] screen will
appear.
106
3Check and change the lens
information.
Check the lens information.
® Press the <INFO.> button.
_y,,Thescreenwillshowthelensnameanda 10-
digitserialnumber.Whentheserialnumberis
displayed,select[OK] andgoto step4.
®_Ifthe lens'serial numbercannotbe
confirmed,"0000000000"will bedisplayed.
Enterthenumberas indicatedbelow. See
thenext page about theasterisk.....
displayedinfront ofthe lensserialnumber.

Fine Adjustment of AF's Point of Focus "_
Enter the serial number.
® Turn the <C_> dial to select the digit,
then press <8> to display <,_>.
® Turn the <0> dial to enter the
number, then press <8>.
® After entering all the digits, turn the
<0> dial to select [OK], then press
<8 >.
About the Lens Serial Number
®in step 3, if ..... appears in front of the 10-digit lens serial
number, you cannot register several copies of the same lens
model. Even if you enter the serial number, ..... will remain
displayed.
® The lens serial number on the lens may differ from the serial
number displayed on the screen in step 3. This is not a defect.
® If the lens serial number includes letters, enter only the numbers in
step 3.
® The location of the serial number differs depending on the lens.
® Some lenses may not have a serial number inscribed. To register a
lens that has no serial number inscribed, enter any serial number in
step 3.
® if [Adjust by lens] is Selecied and an Extender is USed, the adjustment
wi!l be registered for the !ens and Extender combination ,
®_ !f 4-0 lenses have already been registered, a message will appear. After
YOu selec t a !ens whose registratio n!s to be erase d (overwritten), YOU
can register another !ens_
107

Fine Adjustment of AF's Point of Focus *
Single focal length lens
Zoom lens
_,_ Make the adjustment.
® For azoom lens, turn the <0> dial and
select the wide-angle (W) or telephoto (T)
end.Pressing <__> will turn offthe purple
frame and make the adjustment possible.
® Turn the <0> dial to adjust as
desired, then press <8>. The
adjustable range is _+20steps.
® Setting it toward "-:t"" will shift the
point of focus in front of the standard
point of focus.
® Setting it toward "+:_" will shift the
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 <MENU>button to return to
the screen in step 1.
® Turnthe<0 >dialtoselect[Adjust by lens],
thenpress<8>. Themenuwiltreappear.
5Check the result of the adjustment.
® Take a picture and play back the image
(p.244) to check the adjustment result.
® Whentheresultingpictureisfocusedinfrontof
thetargetedpoint,adjusttowardthe"+:_" side.
Whentheresultingpictureisfocusedbehindthe
targetedpoint,adjusttowardthe"-:_," side=
® If necessary, do the adjustment again.
[] WhenShootingWiththeintermediaterange(foca!length)ofaz0Qrn!ens,theAFspointdfocusiscorrected
re_ati_etQt_ adjustmentsmadef_rt_ewide:angieandteiep_t_ends.Evenif_n_ythewide:ang_e_r
telephotoandhasbeanadjusted,acorrectbnwi!!bemadeaut0matica!!yforthein!e[mediaterange,
108

Fine Adjustment of AF's Point of Focus*
Clearing All AF IVlicroadjustments
When [[] Clear all] appears at the bottom of the screen, pressing the
<@> button wi[[ clear a[[ the adjustments made for JAil by same
amount] and [Adjust by lens].
Notes for AF Microadjustment
I_ The AF's point of focus will vary slightly depending on the subject
conditions, brightness, zoom position, and other shooting conditions.
Therefore. even if you perform AF Microadjustment. focus may still not
De achieved at the suitable position.
The adjustments will be retained even if you clear all the camera settings
(p.56). However. the setting itself will be [Disable ].
It Jsbest to make the adjustment at the actual location where you will
shoot. This will make the adjustment more precise.
Using a tripod when making the adjustment is recommended.
For checking the adjustment result, shooting at the d k image-recording
quality is recommended.
The adjustment amount of one step varies depending on the maximum
aperture of the lens. Keep adjusting, shooting, and checking the focus
repeatedly to adjust the AF's point of focus.
AF adjustment is not possible for the Live mode and _ Live mode
(contrast AF)
109

When Autofocus Fails
Autofocus can fail to achieve focus (viewfinder's focus confirmation light
<O> blinks) with certain subjects such as the following:
Subjects difficult to focus
® Very low-contrast subjects
(Example: Blue sky, solid-color walls, etc.)
® Subjects in very low light
® Extremely backlit or reflective subjects
(Example: Car with a highly reflective body, etc.)
® Near and far subjects covered by an AF point
(Example: Animal in a cage, etc.)
® Repetitive patterns
(Example: Skyscraper windows, computer keyboards, etc.)
In such cases, do either of the following:
(1) With One-Shot AF, focus on an object at the same distance as the
subject and lock the focus before recomposing (p.67).
(2) Set the lens focus mode switch to <MF> and focus manually (p.111).
[] For €onditions Whe[e AF Can fail t0 achieye focus With [Live mode]t[_ Live
model during Live View shooting Isee page 211
110