Canon AE-1 PROGRAM Instructions Manual page 44

1. Freezing Motion
Usually a certain shutter speed is chosen to
freeze the motion of a subject. The faster the
subject is moving, the higher the shutter speed
required to stop the action . While it is possible
to freeze the motion of a pedestrian at 1/ 60
second, you need
1/
1000 second for a moving
train. The motion of the bird in this photo was
frozen at 1/ 1000 second.
44
2. Blurring the Subject's Motion
Blurring part of the picture intentionally can give
a convincing sense of action. To blur the sub-
ject. simply set a shutter speed which is too
slow to freeze its action. In this photo it was
blurred at 1/ 125 second.
You can also blur the background by "panning."
Choose a shutter speed suitable for the subject's
motion and release the shutter as you follow the
movement, turning the upper part of your body. See
p. 87 for a colorful example.