Nikon D2Hs User Manual page 120

SB-80DX, SB-28DX, SB-50DX: D-TTL Flash Control
The type of fl ash control used with the SB-80DX, SB-28DX, and SB-50DX
depends on the lens attached:
Lens
3D Multi-Sensor Balanced Fill-Flash for Digital SLR: Speedlight emits series
of near ly in vis i ble prefl ashes (mon i tor pre fl ash es) immediately before main
fl ash. Pre fl ash es re fl ect ed from objects in all areas of frame are picked up
Type
by fi ve-segment TTL fl ash control sensor and an a lyzed in combination with
G or D
range information from lens to adjust fl ash output for natural balance be-
lens
tween main subject and ambient background lighting. Not avail able when
spot me ter ing is used.
Multi-Sensor Balanced Fill-Flash for Digital SLR: As above, except that
range information is not included in reg u lat ing fl ash output.
Other
calculation can be increased for non-CPU lenses by providing lens data (fo-
lenses
cal length and maximum aperture;
me ter ing is used.
Standard TTL Flash for Digital SLR: Flash output adjusted to bring lighting in
frame to standard level; brightness of back ground is not taken into ac count.
Rec om mend ed for shots in which main subject is em pha sized at ex pense
All
of back ground details, or when exposure com pen sa tion is used. Standard
types
TTL fl ash for digital SLR is activated automatically when spot me ter ing is
selected.
106
Description
121–124). Not available when spot
Precision of