Canon EOS REBEL T2i 用户手册

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: Action Shots

 

To freeze the action or moving subject.
Use a fast shutter speed such as 1/4000 sec. to 1/500 sec.

 

To blur a running child or animal giving the impression of fast 
movement.
Use a medium shutter speed such as 1/250 sec. to 1/30 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 of 1/15 sec. or slower. Use a tripod to 
prevent camera shake.

 

Set the shutter speed so that the aperture display does not 
blink in the viewfinder.
If you press the shutter button halfway and change 
the shutter speed while the aperture is displayed, 
the aperture display will also change to maintain the 
same exposure (amount of light reaching the image 
sensor). If you exceed the adjustable aperture 
range, the aperture display will blink to indicate that 
the standard exposure cannot be obtained.
If the exposure will be too dark, the maximum aperture (smallest 
number) will blink. If this happens, turn the <6> dial to the left to 
set a slower shutter speed or increase the ISO speed.
If the exposure will be too bright, the minimum aperture (highest 
number) will blink. If this happens, turn the <6> dial to the right to 
set a faster shutter speed or decrease the ISO speed.

To obtain a correct flash exposure, the flash output will be set 
automatically (autoflash exposure) to match the automatically-set 
aperture. The flash sync speed can be set from 1/200 sec. to 30 sec.

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