Canon 40d Manual

							
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11
Customizing theCamera
With Custom Functions, you can change the camera 
functions according  to your preference. Also, the 
current camera settings can be saved under the Mode 
Dial’s < w>, < x>, and < y> positions.
The functions explained in this chapter apply to 
Creative Zone modes.  
						

							
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1Select [8].
  Turn the < 6> dial to select the [ 8]
tab.
2Select the group.
  Turn the < 5> dial to select C.Fn I - 
IV, then press < 0>.
3 Select the Custom Function No.
  Turn the < 5> dial to select the 
Custom Function No., then press 
< 0 >.
4 Change the setting as desired.
  Turn the < 5> dial to select the 
setting (number), then press < 0>.
  Repeat steps 2 to 4 if you want to set 
other Custom Functions.
  At the bottom of the screen, the 
current Custom Function settings are 
indicated below the respective 
numbers.
5Exit the setting.
 Press the < M> button.
X The screen for step 2 will reappear.
In step 2, select [ Clear all Custom Func. (C.Fn) ] to clear all the 
Custom Function settings.
3  Setting Custom Functions N
Custom Function No.
Clearing All Custom Functions
Even after all the Custom Functions are cleared, the setting for C.Fn IV -5 
[Focusing Screen ] will remain intact.  
						

							
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3 Setting Custom Functions N
Custom Functions
C.Fn I: Exposure
1Exposure level increments2ISO speed setting increments
3 ISO expansion
4Bracketing auto cancel5Bracketing sequence
6 Safety shift
7Flash sync. speed in Av mode
C.Fn II: Image
1Long exposure noise reduction2High ISO speed noise reduction
3 Highlight tone priority
C.Fn III: Auto focus/Drive
1 Lens drive when AF impossible2Lens AF stop button function3AF point selection method
4 Superimposed display
5AF-assist beam firing6AF during Live View shooting7 Mirror lockup
C.Fn IV: Operation/Others
1 Shutter button/AF-ON button2AF-ON/AE lock button switch3SET button when shooting
4 Dial direction during Tv/Av
5Focusing Screen6Add original decision data
7 Live View exposure simulation
The Custom Functions whose numbers are shaded   do not function 
during Live View shooting. (Settings are disabled.) With C.Fn III -2, only 2 
and 5 will be effective.  
						

							
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Custom Functions are organized into four groups based on the function 
type: C.Fn I: Exposure, C.Fn II: Image, C.Fn III: Auto focus/Drive, C.Fn 
IV: Operation/Others.
3 Custom Function Settings N
C.Fn I: Exposure
C.Fn I -1     Exposure level increments
0: 1/3-stop
1: 1/2-stop
Sets 1/2-stop increments for the shutter speed, aperture, exposure 
compensation, AEB, etc. Effective when you prefer to control the 
exposure in less fine increments than 1/3-stop increments.
C.Fn I -2     ISO speed setting increments
0: 1/3-stop
1: 1-stop
C.Fn I -3     ISO expansion
0: Off
1: OnFor the ISO speed, “ H” (equivalent to ISO 3200) will be selectable.
The exposure level will be displayed in the viewfinder and on the LCD 
panel as shown below.  
						

							
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3 Custom Function Settings N
C.Fn I -4     Bracketing auto cancel
0: On
The AEB and WB-BKT settings will be canceled if you set the power 
switch to < 2> or clear the camera settings. AEB will also be 
canceled when the flash is ready to fire.
1: Off
The AEB and WB-BKT settings will be retained even when the power 
switch is set to < 2>. (When the flash is ready, AEB will be canceled. 
However, the AEB amount will be retained in memory.)
C.Fn I -5     Bracketing sequence
The AEB shooting sequence and white balance bracketing sequence can 
be changed.
0: 0, -, +
1: -, 0, +
C.Fn I -6     Safety shift
0: Disable
1: Enable (Tv/Av)
This works in the shutter-priority AE (Tv) and aperture-priority AE (Av) 
modes. If the subject’s brightness changes suddenly and the current 
shutter speed or aperture becomes unsuitable, the shutter speed or 
aperture is shifted automatically to obtain a suitable exposure.
C.Fn I -7    Flash sync. speed in Av mode
0: Auto
1:  1/250 sec. (fixed)Locks the flash sync speed to 1/250 sec. in the aperture-priority AE 
mode. (Against dark backgrounds such as the night sky, the subject’s 
background will look dark.)
AEBWB Bracketing
B/A DirectionM/G Direction0 : Standard exposure0 : Standard white balance0 : Standard white balance
-: Decreased exposure-: More blue- : More magenta
+: Increased exposure+ : More amber+ : More green  
						

							
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3 Custom Function Settings N
C.Fn II: Image
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. During the noise reduction process, shooting is 
possible. However, you will not be able to see anything on the LCD monitor 
and in the 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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3 Custom Function Settings N
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 III: Auto focus/Drive
C.Fn III -1     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.
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 LCD panel and in the viewfinder, will 
have the “0” displayed as a smaller character such as “ 2oo”. When the 
image’s shooting information (p.117) is displayed, the ISO speed’s “0” will 
also be displayed as a smaller character.  
						

							
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3 Custom Function Settings N
C.Fn III -2     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 center
In the manual AF point selection mode, the button instantly switches to 
automatic AF point selection only 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.
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.
  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.  
						

							
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3 Custom Function Settings N
C.Fn III -3    AF point selection method
0: Normal
Press the < S> button and use < 9> to select the AF point.
1: Multi-controller direct Without pressing the < S> button first, you can just use the < 9> to 
select the desired AF point. Pressing the < S> button will set it to 
automatic AF point selection.
2: Quick Control Dial direct Without pressing the < S> button first, you can just use the < 5> to 
select the desired AF point. By holding down the < S> button and 
turning the < 6> dial, you can set the exposure compensation.
C.Fn III -4    Superimposed display
0: On
1: Off
The AF point in the viewfinder will not flash in red. Recommended when 
it is bothersome to see it light up.
The AF point will still light when you select it.
C.Fn III -5     AF-assist beam firing
The AF-assist beam can be emitted by the camera’s built-in flash or by the 
external, EOS-dedicated Speedlite.
0: Enable
1: DisableAF-assist beam not emitted.
2: Only external flash emits
If an external, EOS-dedicated Speedlite is attached, it will emit the AF-
assist beam when necessary. The camera’s built-in flash will not emit 
the AF-assist beam.
If the external, EOS-dedicated Speedlite’s [ AF-assist beam firing] Custom 
Function is set to [ Disabled], the Speedlite will not emit the AF-assist beam 
even if the camera’s C.Fn III -5-0/2 is set.  
						

							
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3 Custom Function Settings N
C.Fn III -6     AF during Live View shooting
0: Disable
1: Enable
During Live View shooting, you can interrupt the Live View image 
display and focus for as long as you hold down the < p> button.
C.Fn III -7     Mirror lockup
Prevents camera vibrations caused by the reflex mirror action which can 
disturb shooting with super telephoto lenses or close-up shooting. See 
page 98 for the mirror lockup procedure.
0: Disable
1: Enable
C.Fn IV: Operation/Others
C.Fn IV -1     Shutter button/AF-ON button
0: Metering + AF start
1: Metering + AF start/AF stop
During autofocusing, you can press the < p> button to stop the 
autofocusing.
2: Metering start/Metering + AF start
This is useful for subjects which keep moving and stopping repeatedly. 
In the AI Servo AF mode, you can press the < p> button to 
repeatedly start or stop the AI Servo AF operation. The exposure is set 
at the moment the picture is taken. Thus, the optimum focusing and 
exposure will always be achieved as you wait for the decisive moment.
3: AE lock/Metering + AF start
Convenient when you want to focus and meter at different parts of the 
picture. Press the < p> button to meter and autofocus, and press 
the shutter button halfway to attain AE lock.
4: Metering + AF start / disable
The < p > button will not function.