Canon 50d Owners Manual

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10
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  and < x> positions.
The functions explained in this chapter apply to 
Creative Zone modes.
Creative Zone
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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 .
3Select the Custom Function 
number.
 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 [8 C.Fn IV -
5: Focusing Screen ] will remain intact.
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3 Custom Functions N
C.Fn I: Exposure
1Exposure level increments
p.1742ISO speed setting increments
3 ISO expansion
4Bracketing auto cancel
5Bracketing sequencep.175
6 Safety shift7Flash sync. speed in Av mode
C.Fn II: Image
1Long exposure noise reductionp.1762High ISO speed noise reduction
3 Highlight tone priority p.177
4Auto Lighting Optimizer
C.Fn III: Autofocus/Drive
1Lens drive when AF impossiblep.1782Lens AF stop button function3 AF point selection method
p.179
4Superimposed display
5AF-assist beam firing6 Mirror lockup p.180
7
AF Microadjustment
C.Fn IV: Operation/Others
1Shutter button/AF-ON buttonp.1812AF-ON/AE lock button switch
3 Assign SET button p.182
4Dial direction during Tv/Av5Focusing screenp.183
6 Add original decision data p.184
7Assign FUNC. button
The Custom Functions whose numbers are shaded do  not function during 
Live View shooting. (Settings are disabl ed.) With C.Fn III -2, only 2 and 5 will 
be effective.
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3 Custom Function SettingsN
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: On
“H1 ” (equivalent to ISO 6400) and “H2 ” (equivalent to ISO 12800) will be 
selectable for the ISO speed.
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.)
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 -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. When the subject’s brightness changes erratically and the 
correct autoexposure cannot be obtained, the camera will change the 
exposure setting automatically to obtain a correct exposure.
C.Fn I -7    Flash sync. speed in Av mode
0: Auto
1: 1/250-1/60 sec. autoWith aperture-priority AE for flash shots, set this when you want to 
minimize camera shake. (For night scenes and dark backgrounds, the 
subject’s background will come out dark.)
2:  1/250 sec. (fixed) With aperture-priority AE for flash shots, set this when you use a 
telephoto lens and want to minimize camera shake. (For night scenes 
and dark backgrounds, the subject’s background will come out darker 
than for setting 1.)
AEB  WB 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 of 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
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. Change 
the setting to suit the noise level.
0: Standard
1: Low
2: Strong
3: Disable
 After the picture is taken, the noise  reduction process may take the same 
amount of time as the exposure. You cannot take another picture until 
the noise reduction process is completed.
  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.
With setting 2, the maximum burst  for continuous shooting will 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 II -4     Auto Lighting Optimizer
If the images comes out dark or the contrast is 
low, the brightness and contrast are corrected 
automatically. Change the setting as desired. In 
the Basic Zone modes, [ Standard] is set 
automatically.
For RAW images, you can apply the settings 
made with Digital Photo Professional (bundled 
software).
0: Standard
1: Low
2: Strong
3: Disable
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 - 3200.
Also, < A> (dynamic range) will be displayed on the LCD panel and in the 
viewfinder.
Ð
  This will not work if manual exposure has been set.
  Depending on the shooting conditions, the noise may increase.
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3 Custom Function Settings N
C.Fn III: Autofocus/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 off
Prevents 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.
C.Fn III -2     Lens AF stop button function* The AF stop button is provided only on super telephoto IS lenses.
0: AF stop
1: AF startAF 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. This is 
convenient in the AI Servo AF mode when you can no longer track the 
subject with the manually-selected AF point. 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. 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 < 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
When focus is achieved, the AF point will not flash in red in the 
viewfinder. 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: DisableThe AF-assist beam is 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 fire 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     Mirror lockup
0: Disable
1: Enable
Prevents camera vibrations caused by the reflex mirror action which can 
disturb shooting with super telephoto lenses or close-up (macro) 
shooting. See page 106 for the mirror lockup procedure.
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. AF adjustment cannot be 
done during Live View shooting in Live and Live u modes.
You can make fine adjustments for 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 
( 73 ), 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.
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