Fujifilm S5 Owner's Manual Page 78

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78
Flash Photography
Built-in flash
This camera is equipped with a guide number 12 flash
(ISO 100, m/ft) that can be used not only when natural
lighting is inadequate, but also to fill in shadows and
backlit subjects or to add a catch light to the subject’s
eyes.
Speedlight emits series of nearly invisible preflashes
(monitor preflashes) immediately before main flash.
Preflashes reflected from objects in all areas of frame are
picked up by 1,005-pixel RGB sensor and are analyzed in
combination with information from matrix metering system
to adjust flash output for natural balance between main
subject and ambient background lighting.
If type G or D lens is used, distance information is
included when calculating flash output.
Precision of calculation can be increased for non-CPU
lenses by providing lens data (focal length and
maximum aperture; p.121).
Not available when spot metering is used.
Flash output adjusted to bring lighting in frame to
standard level; brightness of background is not taken into
account. Recommended for shots in which main subject
is emphasized at expense of background details, or when
exposure compensation is used.
Standard i-TTL flash for Digital SLR is activated
automatically when spot metering is selected.
MEMO
i-TTL flash control can adjust for ISO sensitivities
between 100 and 1600. It may not be able to adjust
flash level appropriately for ISO sensitivities over 1600.
The flash angle of the built-in flash can cover the field of
view of an 18 mm lens. It may not be able to light the
entire subject with some lenses or apertures.
When [ON] is selected for [ISO AUTO CONTROL]
under [ISO AUTO CONTROL] under [S EXPOSURE]
in the [SET UP] menu, ISO sensitivity will automatically
be adjusted as required for optimal flash output. This
may result in foreground subjects being underexposed
in flash photographs taken at slow shutter speeds, in
daylight, or against a bright background. In these cases,
choose a flash mode other than slow sync or select
mode or and choose a larger aperture.
i-TTL balanced Fill-Flash for Digital SLR
Standard i-TTL Flash for Digital SLR
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