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• TTL fill-in flash
Some system cameras offer the possibility of TTL fill-in
flash in addition to normal TTL flash control.This mode
is used for daylight shots to brighten dense shadows
and when shooting against the light. Based on the sen-
sor measurement conducted inside the camera and
the subsequent evaluation by the camera electronics
the correct amount of flash light is used to produce a
balanced exposure. In TTL fill-in flash mode, the came-
ra automatically performs a flash exposure correction.
• TTL flash exposure correction
There are certain situations when the sensor inside the
camera can be confused.This is the case with very
dark subjects in front of a very bright background
(resulting in an underexposed subject) or a particularly
bright subject in front of a very dark background
(resulting in an overexposed subject). Normal exposure
correction can be completed by way of aperture and
shutter speed control, changing the film speed, or a
+/- correction on the camera. However,this changes
all elements involved in an exposure. Consequently, a
special flash exposure correction is possible on some
cameras.With such flash exposure correction the over-
all exposure is retained, while the dark parts are brigh-
tened with fill-in flash. For further details please refer
to the respective operating instructions for the given
camera and the adapter.
• Anti-red eye preflash
(only with Nikon 3402 SCA adapter)
Red eyes are a purely physical effect that always ari-
ses when people look directly at the camera, the
ambient light is relatively dark, and the flash unit is
mounted on or alongside the camera.The flash lights
up the blood-filled retina at the back of the eye which
passes through the pupil and is recorded by the came-
ra as a red spot.
The red-eye reducing preflash function results in a sig-
nificant improvement. In this function the mecablitz
fires three visible, weak preflashes, before the shutter
curtain opens and the measuring beam is emitted for
the multi-sensor (if permitted by the flash unit and
camera), and only then fires the main flash.
These three preflashes induce the pupils to close furt-
her,thereby diminishing the red-eye effect.This func-
tion is available in any exposure programme. For furt-
her details please refer to the operating instructions for
the given camera.
• TTL-HSS mode
This mode permits the use of flash at shutter speeds
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Glossary
Terminologia
Terminología
700 47 0078-A4 PDF GB-I-E 30.09.2008 14:12 Uhr Seite 94