Depth Of Field Preview Button.35 - Pentax ZX-M Operating Manual

5 DEPTH-OF-FIELD PREVIEW BUTTON
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Notes:
• If the lens aperture is set to an f-stop other than
[ A ] position, the camera will close down to the
aperture you have set while depressing the pre¬
view button.
• This preview button can also be used even if the
lens aperture ring is set to the [ A ] position.
Purpose:
To determine before taking a picture how much of
the scene wili actually be in focus at the aperture
selected or indicated.
While looking through the viewfinder, press the pre¬
view button.
• The image seen in the viewfinder may appear
dark, but the actual depth-of-field can be seen.