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T ECH NI CA L GLOSSARY
A
ADI
Modern further development of
the TTL flash control for Sony Alpha and
which, for example, the data for distance to the subject must be put into the flash exposure in addition.
AF measurement flash
An autofocus auxiliary light (AF measurement flash) integrated in the flash unit automatically supports
the central autofocus sensor of the camera in the event of low ambient light. For a
Automatic unit
During extended breaks from
photographing, the flash unit is switched automatically to an energy-
saving standby state to prevent the power source from discharging
Automatic flash mode
A photo sensor integrated in the flash unit measures the subject during photographing, and automatically
terminates the light output as soon as the subject is correctly exposed.
B Buzzer
Additional acoustic status mes- sages can be activated for flash readiness, flash exposure control as well
as warning tones.
C Correct exposure indication
The correct exposure indication OK is shown on the flash unit after the photograph if the subject in automatic or TTL flash mode was correctly exposed.
D
D-TTL
Modern further development of the TTL flash control with measurement
and Fujifilm cameras.
3D and
For the
for example, is taken into consideration in the flash exposure.
Dot matrix display with soft keys
Individual adaptation of the
display on the camera system and the operating state for optimum and
E
Modern further development
of the TTL flash control with measurement
Canon EOS and PowerShot cameras.
For
taken into consideration during flash exposure such as the distance to the
subject and the guide number of the flash unit, for example.
Extended zoom
With Motor Zoom mode, the main
reflector illuminates the subject more than necessary by one reflector position.
As a result, the additional dispersed light provides softer illumination of the subject.
F
Flash bracketing
Flash bracketing series with
three photos of different flash ex- posure: minus correction value, no correc-
tion value, and plus correction value.
Flash readiness indication
The flash readiness indication illuminates when there is enough energy in the flash capacitor of the flash unit.
G Guide number (GN)
The guide number is the code number for the light output of a flash unit. It is dependent on the set light sen- sitivity ISO and (for zoom reflectors) on the reflector position, as well as on any reflector attachments that may be in use (e.g. wide- angle or telephoto lens cover). For high speed synchronization (HSS), the guide number is dependent on the shutter speed as well.
H HSS – high speed synchronization
In high speed synchronization (HSS), you can flash with expo- sure times that are shorter than the flash
sync time of the camera. As a result, flash photos with wide aperture openings are possible for high ambient light levels, for example to limit the depth of field in portrait shots.
I
Modern further development of
the TTL flash control with measure- ment
Fujifilm cameras.
i-TTL-BL
For the
ditional data such as the dis- tance to the subject, for example, is taken
into consideration in the flash exposure.
K Key function
Locking of the operating ele- ments. Protects against uninten-
tional changes.
L LCD / LED display
Provides information on the flash modes and settings being used.
(>>> Dot matrix display)
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