Canon Mark 3 User Manual

							
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3 Custom Function Settings
C.Fn I -10     Select usable metering modes
Disable: All the metering modes ( q: Evaluative,  w: Partial,  r: Spot, 
e : Center-weighted average) will be selectable.
Enable: Only the metering modes set with [ Register] will be selectable.
Register: To make a metering mode unselectable, uncheck the checkmark 
. After entering the settings, select [ Apply].
C.Fn I -11     Exposure mode in manual exposure
You can set the metering mode to be used in the manual exposure mode.
0:  Specified metering mode
1: Evaluative metering
2: Partial metering
3: Spot metering
4: Center-weighted average
C.Fn I -12     Set shutter speed range
Disable: The settable shutter speed range will be 1/8000 sec. to 30 sec.
Enable: The settable shutter speed will range from the highest shutter 
speed to the lowest shutter speed set with [ Register].
Register: The highest shutter speed can be registered within 1/8000 sec. 
to 1/250 sec., and the lowest shutter speed can be registered 
within 30 sec. to 1/60 sec. After entering the settings, select 
[Apply ].
C.Fn I -13     Set aperture value range
Disable: The settable aperture will range from the camera-attached lens’ 
maximum aperture to  minimum aperture.
Enable: The settable aperture will range from the smallest to largest 
aperture set with [ Register].
Register: The smallest aperture can be registered within f/1.4 to f/91, and 
the largest aperture can be registered within f/1.0 to f/64. After 
entering the settings, select [ Apply].
With settings 1 to 4, you cannot chan ge the metering mode by pressing the 
< Q > button during shooting.  
						

							
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C.Fn I -14     Apply shooting/metering mode
While holding down the < A> (AE lock) button, you can switch to the 
registered setting (shooting mode, metering mode, shutter speed, aperture, 
or exposure compensation).
Disable: Pressing the < A> button will lock the exposure (AE lock).
Enable: By holding down the < A> button, you can instantly switch to the 
registered setting.
Register: Set the desired setting for the AE lock button: shooting mode, 
metering mode, shutter speed, aperture, or exposure 
compensation.
When you select [ Register], [With AE lock button (AF on/AF 
off) ] will be displayed where you can set the AE lock button to 
also execute AF or not. Select [ AF on/AF off] to register the 
setting to the camera.
C.Fn I -15    Flash sync. speed in Av mode
0: Auto
1:  1/250 sec. (fixed)
Sets the flash sync speed to 1/250 sec. in the aperture-priority AE (Av) 
mode. (Against dark backgrounds such as the night sky, the subject’s 
background will look dark.)  
						

							
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3 Custom Function Settings
C.Fn II: Image/Flash exposure/Display
C.Fn II -1     Long exposure noise reduction
0: Off
1: Auto
For 1 sec. or longer exposures, noise reduction is performed 
automatically if noise typical of long exposures is detected. This [ Auto] 
setting is effective in most cases.
2: On
Noise reduction is performed for all exposures 1 sec. or longer. The [ On] 
setting may be effective for noise that cannot be detected or reduced 
with the [ Auto] setting.
C.Fn II -2     High ISO speed noise reduction
0: Off
1: On
Reduces the noise generated in the image. Although noise reduction is 
applied at all ISO speeds, it is particularly effective at high ISO speeds. 
At low ISO speeds, the noise in the shadow areas is further reduced.
With setting 2, if a long exposure is made during Live View shooting, the 
LCD monitor will not display anything (no Live View image display) while 
noise reduction is applied after the picture is taken. During the noise 
reduction process, shooting is possible. However, you will not be able to see 
anything on the LCD monitor and in th e viewfinder. Since you cannot check 
the focus and picture composition, shooting is not recommended during the 
noise reduction process.
With setting 1 and 2, after the picture is taken, the noise reduction process 
may take the same amount of time as the exposure. During the noise 
reduction, shooting is still possible as long as the maximum burst indicator 
in the viewfinder shows “ 1” or higher.
With setting 1, the maximum burst  for continuous shooting will greatly 
decrease.  
						

							
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C.Fn II -3     Highlight tone priority
0: Disable
1: Enable
Improves the highlight detail. The dynamic range is expanded from the 
standard 18% gray to bright highlights. The gradation between the grays 
and highlights becomes smoother.
C.Fn II -4     E-TTL II flash metering
0: Evaluative flash meteringFully automatic flash photography for all conditions, from low light to 
daylight fill-flash.
1: Average flash metering
The flash is averaged for the entire area covered by the flash. Since 
automatic flash exposure compensation will not be executed, you may 
have to set it yourself depending on the scene. This also applies if you 
use FE lock.
C.Fn II -5     Shutter curtain sync.
0: 1st-curtain synchronization
1: 2nd-curtain synchronization
The flash fires right before the shutte r closes. When a slow shutter speed is 
set, you can capture a light trail following the subject.
This Custom Function can be used to obtain 2nd-curtain sync effects even 
with EX-series Speedlites which do not  have this feature. If the EX-series 
Speedlite has this feature, it will ov erride this Custom Function’s setting.
With setting 1, noise in the shadow areas may be slightly more than usual.
With setting 1, the settable ISO speed range will be 200 - 1600. Also, the ISO speed 
displayed on the top LCD panel and in the viewfinder, will have the “0” displayed as a 
smaller character such as “
2oo”. When the image’s shooting info (p.117) is 
displayed, the ISO speed’s “0” will also be displayed as a smaller character.
With setting 1, a preflash will be fired for flash metering control right after 
you press the shutter button completely . Remember that the main flash will 
then fire right before the shutter closes.  
						

							
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C.Fn II -6     Flash firing
Enables or disables the firing of an external flash or non-Canon flash 
connected to the PC terminal.
0: Enable
1: Disable
Convenient when you want to use the external flash’s AF-assist beam 
only. Note that whether or not the AF-assist beam is emitted is 
dependent on the C.Fn III -14 setting.
C.Fn II -7     Viewfinder info. during exposure
0: Disable
1: Enable
The viewfinder information will be displayed even during an exposure. Displays the 
exposure setting, number of remaining  shots, etc., during continuous shooting.
C.Fn II -8     LCD panel illumination during Bulb
0: Off
1: On during Bulb
If the LCD panel’s illumination is on (p.102) and you take a bulb 
exposure, the illumination will continue until the bulb exposure ends. 
This is convenient when you are taking a bulb exposure in low light and 
want to check the exposure time.
C.Fn II -9     INFO button when shooting
What is displayed on the LCD monitor when you press the < B> button 
when the camera is ready to shoot can be changed.
0: Displays camera settings
Displays the camera settings. (p.186)
1: Displays shooting functions
Displays shooting functions as found on the top LCD 
panel and in the viewfinder. When the display is on, you 
can still press the <
S> button and select the AF point 
on the LCD monitor.
This is convenient when it is difficult to set the camera 
settings while viewing the top LCD panel, when you are 
shooting straight up, or when the camera position or 
point of focus is fixed and you only want to change the camera settings during shooting.  
						

							
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3 Custom Function Settings
C.Fn III: Auto focus/Drive
C.Fn III -1     USM lens electronic MF
USM lens electronic MF can be enabled or disabled for when you use any 
of the following lenses.
EF50mm f/1.0L USM, EF85mm f/1. 2L USM, EF85mm f/1.2L II USM, 
EF200mm f/1.8L USM, EF 300mm f/2.8L USM, EF400mm f/2.8L USM, 
EF400mm f/2.8L II USM, EF500mm  f/4.5L USM, EF600mm f/4L USM, 
EF1200mm f/5.6L USM, or EF28-80mm f/2.8-4L USM
0: Enable after One-Shot AF
After focus is achieved in One-Shot AF, electronic MF is enabled. If C.Fn 
IV -1-2, 3 is set, it is also enabled before focus is achieved.
1: Disable after One-Shot AF
After focus is achieved in One-Shot AF, electronic MF is disabled. If 
C.Fn IV -1-2, 3 is set, it is possible before focus is achieved.
2: Disable in AF mode Electronic MF is disabled in the AF mode.
C.Fn III -2     AI Servo tracking sensitivity
During focusing in the AI Servo AF mode, the AF sensitivity for tracking 
subjects (or obstacles) moving into AF points can be set to one of five 
levels.
If it is set toward [ Slow], interruptions by any obstacles will be less 
disruptive. It makes it easier to keep tracking the target subject.
If it is set toward [ Fast], it will be easier to focus any subjects which 
suddenly enter the picture from the side. Convenient when you want to 
successively photograph multiple subjects located at random distances.
C.Fn III -3     AI Servo 1st/2nd image priority
For the AI Servo AF and continuous shooting modes, you can change the 
Servo’s operation characteristics and shutter-release timing.
0: AF priority/Tracking priority
For the first shot, focusing the subject is given priority. For the 2nd and 
following shots during continuous shooting, focus-tracking of the subject 
is given priority.  
						

							
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1: AF priority/Drive speed priority
For the first shot, focusing the subject is given priority. During continuous 
shooting, the continuous shooting speed is given priority over the focus-
tracking of the subject.
2: Release/Drive speed priority
For the first shot, shutter release is given priority over focusing the 
subject. During continuous shooting, the continuous shooting speed is 
given priority more than with setting 1.
C.Fn III -4     AI Servo AF tracking method
In the AI Servo AF mode while you are focus-tracking a subject, the camera 
can either continue focusing the target subject even if a closer subject 
(closer than at the main focus point) suddenly appears in the picture, or the 
camera can switch to focus the closer subject.
*Main focus point =  With automatic AF point selection: Center AF point With manual AF point selection + AF point expansion 
(C.Fn III -8-1/2): Manually-selected AF point
0: Main focus point priority The active AF point will switch to the main AF point and start focusing 
the closer subject. Convenient when you always want to focus the 
closest subject.
1: Continuous AF track priority Any closer subject appearing in the picture will be ignored as an 
obstruction. The main focus point does not take priority, so the tracking 
of the target subject can continue and switch to an adjacent AF point 
based on the preceding focusing result. Convenient when obstacles 
such as telephone poles go in front of the target subject.
C.Fn III -5     Lens drive when AF impossible
If autofocus is executed, but focus cannot be achieved, the camera can 
either keep trying to focus or stop.
0: Focus search on
1: Focus search offPrevents the camera from becoming grossly out of focus as it attempts 
to focus again. Especially convenient with super telephoto lenses which 
can become extremely out of focus.  
						

							
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3 Custom Function Settings
C.Fn III -6     Lens AF stop button function
0: AF stop
1: AF start
AF operates only while the button is pressed. While the button is 
pressed, AF operation with the camera is disabled.
2: AE lock When the button is pressed, AE lock is applied. Convenient when you 
want to focus and meter at different parts of the picture.
3: AF point: M  9 Auto/Auto  9 ctr
In the manual AF point selection mode, the button instantly switches to 
automatic AF point selection (among 45 AF points) while you hold it 
down. Convenient when you are no longer able to focus track a moving 
subject with a manually-selected AF point in the AI Servo AF mode. You 
can instantly switch from manual to automatic AF point selection mode.
In the automatic AF point selection mode, the button selects the center 
AF point only while you hold it down.
4: ONE SHOT  z AI SERVO
In the One-Shot AF mode, the camera switches to AI Servo AF mode 
only while you hold down the button. And in the AI Servo AF mode, the 
camera switches to One-Shot AF mode only while you hold down the 
button.
Convenient when you need to keep switching between One-Shot AF 
and AI Servo AF for a subject which keeps moving and stopping.
5: IS start With the lens’ IS switch already < ON>, the Image Stabilizer operates 
when you press the button.
6: Switch to registered AF point While holding down the AF Stop button, press the < I> button to 
switch to the registered AF point. Press it again to switch to the previous 
AF point.
  The AF stop button is provided only on super telephoto IS lenses.
  With setting 5, the Image Stabilizer will not operate when you press the 
shutter button halfway.
  To register the AF point, see page 171.  
						

							
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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 of 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. 
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 to be photographed. 
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.
  With settings 1 and 2, you can  check the adjustment amount on the 
camera settings screen (p.186). Also, when you display the image’s 
shooting information (p.117), you can see the adjustment amount.
 
The registered AF microadjustments will be  retained even if you use the Custom 
Function to clear all settings (p.156). However, the setting itself will be [0: Disable].  
						

							
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C.Fn III -8     AF expansion with selected point
In the AI Servo AF or One-Shot AF mode with manual AF point selection, 
you can increase the number of AF points by using the Assist AF points.
Effective when it is difficult to track a moving subject with just one AF point. 
0: Disable
1: Enable (left/right Assist AF points)
The points on the immediate left and right (or top and bottom for a 
vertical shot) of the user-selected AF point become active.
2: Enable (surrounding Assist AF points)
The points immediately surrounding the user-selected AF point become 
active.
C.Fn III -9     Selectable AF point
0: 19 points
1: Inner 9 pointsThe user-selectable AF points will be limited to the inner 9 points.
2: Outer 9 points
The user-selectable AF points will be limited to the outer 9 points.
  The AF point expansion centers on the selected AF point. Therefore, if a 
peripheral AF point is selected, the AF point expansion will be smaller as 
shown below.
  Even when C.Fn III -9-1/2 is se t, the expansion will take effect.
Assist AF point expanded by 1 point on left and rightAssist AF point expanded by 1 point all around
Selected AF point Expansion points
With settings 1 and 2, the selectable AF points and the selection pattern will 
be as shown below:
Inner 9 points Outer 9 points
Automatic selection Automatic selection Automatic selection Automatic selection