Dörr DAF 42 Notice D'utilisation page 16

Shorter shutter speeds than the x-synchronization should under no circumstances be used in order to avoid
incorrect exposures. Using the DAF-42 with TTL mode the x-synchronization of your camera will be set
automatically.
Front and Rear Curtain Synchronization (only Model Pentax/Samsung)
Position the switch in the middle if you want to fire the flash synchronously onto the rear curtain. In this
mode the flash does not fire onto the opening of the front curtain, but is only triggered shortly before the rear
curtain activates. This mode will only effect picture results when taking shots of moving objects and by using
a shutter speed of > 1/30 s:
• When taking pictures of moving objects with long-time exposure, a motion light trail, caused by the
ambient light, appears in front of the moving object. Thereafter the flash is triggered and then the
movement is photographed. Whith flash synchronization onto rear curtain the order is reversed. First
the movement is photographed. Shortly before the rear curtain activates, the flash is triggered. Now, the
motion light trail appears after the moving object on the photograph. The picture gives now the impression
of dynamic and speed.
• Use manual exposure on your camera and set shutter speed and aperture manually. This way a precise
accommodation of the shooting situation is better warranted.
• To avoid blurred pictures, the use of a DÖRR tripod is recommended. Move the switch to the right if you
want to flash "regular" that is utilizing the front curtain.
Long-Time Synchronization
To achieve a balanced light ratio between object and background in weak ambient light, a longer exposure
time is recommended. Thereby, the main object in the foreground is illuminated by the flash while the
background is adjusted to the brightness of the main object through a longer exposure time. (With "regular"
flashing the background would disappear in the dark.) Extended time synchronization helps you to achieve
great effects, e. g. by taking portraits at the fair grounds with an evening setting as background or in a
neon-lit shopping center. To set your camera to a longer exposure time of your choice, set your camera to
automatic diaphragm mechanism or manual exposure control.Some camera models allow for extended time
synchronization also in auto mode or with automatic time release. To avoid blurred pictures, the use of a
DÖRR tripod is recommended.
Using the Flash with Daylight
Although on sunny days the light may be sufficient to restrain from using the
flash, depending on the position of the sun more or less unsightly shades may
appear on faces and other objects. Also, shots made with back light often
cause the main object to be underexposed. Therefore, it is advisable to use the
flash also in sufficient daylight. Therewith, the above mentioned problems can
be avoided. Furthermore, the colors on your pictures will be intensified and the
image contrast will be enhanced as well.
Slave Function
The DAF-42 can also be triggered wireless from a distance (e. g. via the built-in camera flash). Thereto
position the slave switch to S. Now the slave photocell is activated. The photocell catches reflecting light
from the built-in camera flash and synchronously triggers the DAF-42. The distance range is over 10 m. In
slave mode TTL flash control is automatically deactivated. In manual flash mode the flash is set automatically
to full flash power. Via the mode button you can reduce the capacity down to 1/16 of the full capacity.
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