Pentax AF540FGZ - Manual (Page 58)

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■ AF Spotbeam
The AF540FGZ features a built-in red spotbeam
projector to assist the autofocus system in dim light and
low-contrast conditions. When using the flash with
autofocus camera in dark conditions, the spotbeam will
be projected automatically depending on the ambient
lighting conditions. This function is activated only when
the camera is set to autofocus. By setting the flash
mode to (SB), the AF540FGZ can be used exclusively
as a focusing aid in dim light.
1.Set the power switch to the (ON) position.
2.Press the flash mode button (MODE) to select (SB).
3.Set the camera to the autofocus mode.
4.Press the shutter release button halfway down to let
the AF spotbeam fire.
●
The AF spotbeam does not work in bright light
conditions.
● If the In-focus indicator does not light up in
several seconds, it means that the subject is
hard to autofocus. In this case, use the manual
focus mode to focus on the subject.
● To change the composition, raise your finger off
the shutter release button and press it halfway
down again to recompose the picture.
● When using the AF540FGZ’s built-in AF
spotbeam, the AF spotbeam built into the camera
will not operate.
● The AF spotbeam on the flash unit works
accurately only when mounted onto the camera’s
hot shoe.
● The flash does not fire when using the
AF540FGZ spotbeam exclusively as a focusing
aid.
Using the AF540FGZ Spotbeam
Exclusively as a Focusing Aid
00_AF540FGZ.book Page 56 Monday, April 10, 2006 11:42 AM