Nikon D100 Product Manual - Page 107

Flash Mode - digital slr camera

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Page 107 highlights

Taking Photographs-Flash Photography D-TTL Flash Control The type of D-TTL flash control available varies with the type of lens used: Lens Flash control for built-in Speedlight 3D Multi-Sensor Balanced Fill-Flash for Digital SLR: Based on infor- mation from the matrix metering system, flash output is adjusted for a natural balance between the main subject and ambient background lighting. The Speedlight emits a series of nearly invisible preflashes (monitor preflashes) immediately before the main flash. Preflashes re- Type G or D CPU lens flected from objects in all areas of the frame are picked up by the camera's through-the-lens (TTL) multi sensor, where they are analyzed instantaneously in combination with data on the current sensitivity (ISO equivalency) setting, aperture, lens focal length, exposure compensa- tion, and distance information provided by the lens. The results of this analysis are used to balance flash output with natural light. 3D multi- sensor balanced fill-flash for digital SLR is not available in manual expo- sure mode or when spot metering is used. Other CPU lens Multi-Sensor Balanced Fill-Flash for Digital SLR: As above, except that distance information is not included in regulating flash output. Not available in manual exposure mode or when spot metering is used. All types Standard TTL Flash for Digital SLR: Flash output is adjusted to ensure that the main subject is correctly exposed, without taking the background into account. It is recommended for shots in which the main subject is emphasized at the expense of background details, or when exposure compensation is used. Standard TTL flash for digital SLR is activated automatically when: • Built-in Speedlight: the function dial is set to M (manual exposure mode) or spot metering is selected • Optional Speedlight: spot metering is selected 23-Flash Mode ( 158) D-TTL flash control is only available when Custom Setting 23 (Flash Mode) is set to DTTL. When Custom Setting 23 is set to Manual, the built-in Speedlight will fire at full power (GN at ISO 200 18/59, at ISO 100 12.7/42, m/ft) with every shot with no monitor pre-flashes. 95

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T
aking Photographs—Flash Photography
95
All types
Standard TTL Flash for Digital SLR
: Flash output is adjusted to en-
sure that the main subject is correctly exposed, without taking the back-
ground into account.
It is recommended for shots in which the main
subject is emphasized at the expense of background details, or when
exposure compensation is used.
Standard TTL flash for digital SLR is
activated automatically when:
•
Built-in Speedlight
: the function dial is set to M (manual exposure
mode) or spot metering is selected
•
Optional Speedlight
: spot metering is selected
Lens
Flash control for built-in Speedlight
Other CPU
lens
Multi-Sensor Balanced Fill-Flash for Digital SLR
: As above, except
that distance information is not included in regulating flash output.
Not available in manual exposure mode or when spot metering is used.
Type G or D
CPU lens
3D Multi-Sensor Balanced Fill-Flash for Digital SLR
: Based on infor-
mation from the matrix metering system, flash output is adjusted for a
natural balance between the main subject and ambient background
lighting.
The Speedlight emits a series of nearly invisible preflashes
(monitor preflashes) immediately before the main flash.
Preflashes re-
flected from objects in all areas of the frame are picked up by the
camera’s through-the-lens (TTL) multi sensor, where they are analyzed
instantaneously in combination with data on the current sensitivity (ISO
equivalency) setting, aperture, lens focal length, exposure compensa-
tion, and distance information provided by the lens.
The results of this
analysis are used to balance flash output with natural light.
3D multi-
sensor balanced fill-flash for digital SLR is not available in manual expo-
sure mode or when spot metering is used.
D-TTL Flash Control
The type of D-TTL flash control available varies with the type of lens used:
23—Flash Mode (
158)
D-TTL flash control is only available when Custom Setting 23 (
Flash Mode
) is set to
D-
TTL
.
When Custom Setting 23 is set to
Manual
, the built-in Speedlight will fire at full
power (GN at ISO 200 18/59, at ISO 100 12.7/42, m/ft) with every shot with no monitor
pre-flashes.