Sony NEX-5T - Manual (Page 48)

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x Aperture Priority
You can shoot by changing the focus range or changing the intensity of
background defocusing.
1 Select A (Aperture Priority) (page 44).
2 Turn the control dial to select the desired value.
• You can record a movie with a value adjusted with [Aperture Priority].
z Shutter speed
When a faster shutter speed is used, a moving
subject such as a running person, cars, and sea
spray appears as if they are stopped.
When a slower shutter speed is used, a trailing
image of the movement of the subject is captured
to make more natural and dynamic image.