Nikon SB-27 User Manual download pdf (Page 84)

Glossary of terms

1/300 TTL High-Speed Sync Flash

The F5’s sync shutter speed can be set to 1/300 sec. using a custom function

setting. This is available with the SB-27 set to AUTO (TTL) and the camera’s

exposure mode set to S or M. In this case the SB-27’s guide number is approx.

14 (at the 35mm zoom-head position, ISO 100: for m).

In P or A mode, 1/300 TTL High-Speed Sync Flash does not work and shutter

speed is automatically set to 1/250 sec.

(Applicable to F5)

3D Multi-Sensor Balanced Fill-Flash

This mode automatically controls flash output so as to keep both subject and

background perfectly exposed.

The SB-27 fires a series of nearly invisible preflashes or

Monitor Preflash. These preflashes are detected by the TTL multi-sensor (5-

segment sensor) in Group I cameras and the data is then integrated with

distance information from D-type Nikkor lenses and other exposure data to

determine the optimal flash shooting distance range and light output level for

balanced fill-flash exposure. This is especially effective with scenes that

include: (1) a mirror, white wall or other highly reflective surface, (2) unwanted

obstacle(s) in front of the subject.

(Applicable to F5, F100, F90X/N90s, F90-Series/N90, F80-Series/N80-Series,

F70-Series/N70)

Autofocus assist illumination

Allows you to autofocus in dim light or in the dark with Nikon AF cameras.

When you press the shutter release button halfway, the AF illuminator

automatically turns ON to give contrast to a dark subject, thus enabling the

camera’s autofocus system to function.

(Applicable to all Nikon AF cameras)

Automatic Balanced Fill-Flash with TTL Multi Sensor (3D multi-

sensor balanced fill-flash and multi-sensor balanced fill-flash)

With D-type AF Nikkor lenses, 3D multi-sensor balanced fill-flash is performed,

whereby the SB-27 fires a series of weak preflashes (Monitor Preflash) that are

detected by the camera’s TTL Multi Sensor, then analyzed for brightness and

contrast along with Distance Information from the D-type AF Nikkor lens. The

flash output level is automatically compensated so that both flash output and

ambient light are perfectly balanced.

With non-D-type AF Nikkor lenses, Multi-Sensor balanced Fill-Flash, which offers

the same output control system minus Distance Information, is performed.

These flash modes are effective in scenes with highly reflective objects such

as a mirror or a white wall, and scenes with very dark backgrounds.

(Applicable to F5, F100, F90X/N90s, F90-Series/N90, F80-Series/N80-Series,

F70-Series/N70)

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 90 91 92

No comments

Nikon SB-27 User Manual Page 84