Sony DSLR-A700 - Manual (Page 39)

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You can adjust the shutter speed manually. If you shoot a moving subject at a higher shutter
speed, it appears as if frozen on the image. At a lower shutter speed, the subject appears as if it
flowing.
Aperture value is automatically adjusted.
z Depth-of-field preview
The viewfinder shows an image captured with the widest aperture. The change in aperture affects the
sharpness of the subject image, creating a discrepancy between the sharpness seen in the viewfinder and
in the actual picture. The preview function enables you to see the image with the aperture used in the
actual shooting, allowing you to check the approximate sharpness of the subject image before the actual
shooting.
Press the depth-of-field preview button after the subject is in focus.
While the button is held down, the aperture is narrowed to match the aperture value displayed in the
viewfinder.
• The image in the viewfinder will be darker.
• When the focus is not fixed and the depth-of-field preview button is pressed, you cannot take a picture.
To take a picture, press the depth-of-field preview button with z lit in the viewfinder.
• With a lens equipped with a focus hold button, you can set the camera to perform the preview function
using the focus hold button with [FocusHoldButton] in the Custom menu (page 106).
Shooting with shutter speed priority mode – S
Depth-of-field preview
button
High shutter speed Slow shutter speed