Canon EOS 450D Instruction Manual

71
s: Action Shots
 To freeze the action or moving subject.
Use a fast shutter speed such as 1/500 sec. to 1/4000 sec.
 To blur a running child or animal giving the impression of fast 
movement.
Use a medium shutter speed such as 1/30 sec. to 1/250 sec. Follow 
the moving subject through the viewfinder and press the shutter 
button to take the picture. If you use a telephoto lens, hold it steady 
to prevent camera shake.
 How to blur a flowing river or water fountain.
Use a slow shutter speed to 1/15...

72
To obtain a blurry background or to make everything near and far look 
sharp, set the Mode Dial to  (Aperture-priority AE) to adjust the 
depth of field (range of acceptable focus).
* stands for Aperture value which is the size of the diaphragm hole inside 
the lens.
1Set the Mode Dial to .
2Set the desired aperture.
 The higher the aperture, the sharper 
the picture will look with a wider depth 
of field.
 Turning the  dial to the right will 
set a higher f-number, and turning it 
to the left will...

73
f: Changing the Depth of Field
 When using a high aperture, note that camera shake can occur 
in low light scenes.
A higher aperture will make the shutter speed slower. Under low 
light, the shutter speed can be as long as 30 sec. In such cases, 
increase the ISO speed and hold the camera steady or use a tripod.
 The depth of field depends not only on the aperture, but also 
the lens and subject distance.
Since wide-angle lenses have a wide depth of field, you need not set 
a high aperture to obtain a...

f: Changing the Depth of Field
74
To obtain a correct flash exposure, the flash output will be set to match 
the set aperture (autoflash exposure). The shutter speed will set 
automatically between 30 sec. - 1/200 sec. to suit the scene’s 
brightness.
In low light, the main subject is exposed with the automatic flash, and 
the background is exposed with a slow shutter speed set automatically. 
Both the subject and background look properly exposed (automatic 
slow-speed flash sync). If you are handholding...

75
You can set both the shutter speed and aperture as desired. With flash, the 
flash exposure will be set automatically to match the aperture that was set. 
The flash sync speed can be set to bulb, or from 30 sec. to 1/200 sec.
*  stands for Manual.
1Set the Mode Dial to .
2Set the shutter speed and aperture.
 To set the shutter speed, turn the 
 dial.
 
To set the aperture, hold down the 
<
O> button and turn the  dial.
3Set the exposure and take the 
picture.
 The exposure level indicator in the...

76
Objects in the foreground and background will be in focus automatically. 
All the AF points will function to detect the subject, and the aperture 
required to attain the necessary depth of field will be set automatically.
*  stands for Auto-Depth of field. This mode sets the depth of field automatically.
1Set the Mode Dial to .
2Focus the subject.
 Aim the AF points over the subjects 
and press the shutter button halfway. 
(0)
 All the subjects covered by the AF 
points flashing in red will be in...

77
The metering mode is the method of measuring the brightness of the subject. Normally, evaluative metering is recommended.
1Press the  button.
X[Metering mode] will appear.
2Select the metering mode.
 Press the  key to select the 
metering mode, then press .
q Evaluative metering 
This is an all-around metering mode suited for portraits 
and even backlit subjects. The camera sets the exposure 
automatically to suit the scene. This metering mode is set 
automatically in the Basic Zone modes.
w Partial...

78
Exposure compensation is used to alter the standard exposure set by 
the camera. You can make the image look brighter (increased 
exposure) or darker (decreased exposure). This feature can be used in 
the Creative Zone modes (except ). The exposure compensation 
setting will not be automatically canceled when you turn off the camera. 
After taking the picture, reset the exposure compensation to zero.
Set exposure compensation if the exposure (without flash) does not 
come out as desired.
Making it...

79
Setting Exposure CompensationN
Set flash exposure compensation if the flash exposure of the subject does not 
come out as desired. This feature also works with external EX-series Speedlites.
1Select [Flash exp comp].
 Under the [2] tab, select [Flash exp 
comp], then press .
2Set the exposure compensation 
amount.
 To make the flash exposure brighter, 
press the  key. Or to make it 
darker, press the  key.
 After setting the flash exposure 
compensation amount, press .
 
When you press the shutter...

80
This feature takes exposure compensation a step further by varying the 
exposure automatically with three shots as shown below. You can then 
choose the best exposure. This is called AEB (Auto Exposure 
Bracketing).
1Select [AEB].
 Under the [2] tab, select [AEB], then 
press .
2Set the AEB amount.
 Press the  key to set the AEB 
amount, then press .
 When you press the shutter button 
halfway, the AEB amount will be 
displayed on the LCD monitor.
3Take the picture.
 Focus and press the shutter button...