Canon Camera Eos 5d Mark Iii User Manual

101
3 Customizing AF Functions N
You can set the AF area selecti on mode and manually-selected AF 
point separately for vertical shooting and horizontal shooting.
: Same for both vert/horiz
The same AF area selection mode and 
manually-selected AF point (or Zone) are 
used for both vertical shooting and 
horizontal shooting.
: Select separate AF points
The AF area selection mode and manua lly-selected AF point (or Zone) 
can be set separately for each camera orientation (1. Horizontal, 2. 
Vertical with...

102
3 Customizing AF Functions N
During manual AF point selection, the selection can either stop at the 
outer edge or it can move to the op posite 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.)
: Stops at AF area edges
Convenient if you often use an AF point 
along the edge.
: Continuous
Instead of stopping at  the outer edge, the 
selected AF point continues to the...

103
3 Customizing AF Functions N
The AF points and grid in the viewfin der 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.
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
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.
Normally, this adjustment is not required. Do this adjustment 
only if necessary. Note that doing  this adjustment may prevent 
correct focusing from being achieved.
Set the adjustment manually by ad justing, shooting, and checking the 
result. Repeat this until...

105
3 Fine Adjustment of AF’s Point of Focus N
4Make the adjustment.
 Turn the < 5> dial to make the 
adjustment. The adjustable range is 
±20 steps.
  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 < 5> dial to select [ All by 
same amount ], then press . 
The menu will reappear.
5Check the result of the...

106
3 Fine Adjustment of AF’s Point of Focus N
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 whos e adjustment has been registered, 
the point of focus will always be  shifted by the adjustment amount.
Set the adjustment manually by ad justing, shooting, and checking the 
result. Repeat this until the desir ed adjustment is made. If you use a 
zoom lens, make the adjustment for the...

107
3 Fine Adjustment of AF’s Point of Focus N
Enter the serial number.
 Turn the < 5> dial to select the digit, 
then press < 0> to display < r>.
  Turn the < 5> dial to enter the 
number, then press < 0>.
  After entering all the digits, turn the 
 dial to select [ OK], then press 
< 0 >.
About the Lens Serial Number
  In step 3, if “ * ” appears in fr ont 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...

108
3 Fine Adjustment of AF’s Point of Focus N
4Make the adjustment.
 For a zoom lens, turn the  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 . The 
adjustable range is ±20 steps.
  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...

109
3 Fine Adjustment of AF’s Point of Focus N
When [  Clear all] appears at the bottom of the screen, pressing the 
< L > button will clear all the adjustments made for [ All by same 
amount ] and [Adjust by lens ].
Notes for AF Microadjustment
Clearing All AF Microadjustments
 The AF’s point of focus will vary  slightly depending on the subject 
conditions, brightness, zoom positi on, and other shooting conditions. 
Therefore, even if you perform AF Microadjustment, focus may still not 
be achieved at...

110
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...