Canon 40d Manual

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3 White Balance Correction N
With just one shot, three images having a different color tone can be recorded 
simultaneously. Based on the color temperature of the current white balance 
setting, the image will be bracketed with a blue/amber bias or magenta/green 
bias. This is called white balance bracketing (WB-BKT). White balance 
bracketing is possible up to ±3 levels in single-level increments.
Set the white balance bracketing 
amount.
 In step 2 for white balance correction, 
when you turn the...

72
The file number is like the frame number on a roll of film. The captured 
images are assigned a sequential file number from 0001 to 9999 and 
saved in one folder. You can also change how the file number is 
assigned.
The file number will appear on the personal computer in this format: 
IMG_0001.JPG.
1Select [File numbering].
 Under the [ 5] tab, select [ File 
numbering ], then press < 0>.
2Select the file numbering method.
  Turn the < 5> dial to select the 
desired method, then press < 0>.
File...

73
3 File Numbering Methods
Resets the file numbering to 0001 whenever the CF card is replaced
Each time the CF card is replaced, the file numbering starts from 0001. 
This is convenient if you want to organize images according to CF cards.
If the replacement CF card contains images recorded previously, the file 
numbering of the new images might continue from the file numbering of 
the existing images in the card. To start the file numbering from 0001, the 
CF card must be formatted before use.
The...

74
The color space refers to the range of reproducible colors. With this 
camera, you can set the color space for captured images to sRGB or 
Adobe RGB. For normal images, sRGB is recommended.
1Select [Color space].
 Under the [ 2] tab, select [ Color 
space ], then press < 0>.
2Set the desired color space.
  Select [ sRGB] or [Adobe RGB ], then 
press < 0>.
This is mainly used for commercial printing and other industrial uses. 
This setting is not recommended if you do not know about image 
processing,...

75
4
Setting the AF andDrive Modes
The viewfinder has 9 AF points. By 
selecting a suitable AF point, you 
can shoot with autofocus while 
framing the subject as desired.
You can also select the AF mode and drive mode best 
matching the shooting conditions and subject.
  The asterisk  M on the right of the page title indicates that 
the respective feature is available only in Creative Zone 
modes ( d,s ,f ,a ,8 ).
  In the Basic Zone modes, the AF mode, AF point selection, 
and drive mode are set...

76
Select the AF mode suiting the shooting conditions or subject. In the Basic Zone modes, the optimum AF mode is set automatically.
1On the lens, set the focus mode 
switch to .
2Set the Mode Dial to a Creative 
Zone mode.
3Press the < o> button. (9 )
4Select the AF mode.
 While looking at the LCD panel, turn 
the < 6> dial.
X : One-Shot AF
9 : AI Focus AF
Z : AI Servo AF
Suited for still subjects. When you press the shutter button 
halfway, the camera will focus only once.
  When focus is achieved,...

77
f: Selecting the AF Mode N
This AF mode is for moving subjects when the focusing distance 
keeps changing. While you hold down the shutter button halfway, 
the subject will be focused continuously.
 The exposure is set at the moment the picture is taken.
  In the Creative Zone modes, AF is also possible by pressing the 
 button.
  When the AF point selection is automatic (p.78), the camera first 
uses the center AF point to focus. During autofocusing, if the subject 
moves away from the center AF...

78
Select one of the nine AF points to autofocus. In the Basic Zone and 
 modes, automatic AF point selection will take effect 
automatically. You cannot select the AF point.
1Press the < S> button. (9 )
X The selected AF point will be 
displayed in the viewfinder and on the 
LCD panel.
  If all the AF points light in the 
viewfinder, it means automatic AF 
point selection is in effect.
2Select the AF point.
 To select an AF point, you can either 
turn the < 6> or < 5> dial or use 
< 9 >.
  When you...

79
S Selecting the AF Point N
Under low-light conditions, when you press the shutter button halfway, 
the built-in flash fires a brief burst of flashes. It illuminates the subject to 
enable easier autofocusing.
With lenses whose maximum aperture is larger than f/5.6
With all AF points, cross-type AF sensitive to both vertical and 
horizontal lines is possible.
With lenses whose maximum aperture is larger than f/2.8*
With the center AF point, high-precision, cross-type AF sensitive to both 
vertical and...

80
Autofocus can fail to achieve focus (the focus confirmation light 
blinks) with certain subjects such as the following:
Subjects difficult to focus
  Low-contrast subjects
Example: Blue sky, solid-color walls, etc.
  Subjects in low light
  Extremely backlit and reflective subjects
Example: Car with a reflective body, etc.
  Overlapping near and far objects
Example: Animal in a cage, etc.
  Repetitive patterns
Example: Skyscraper windows, computer keyboards, etc.
In such cases, do one of the...