Dörr DAF-44 Wi Notice D'utilisation page 12

These factors are considered automatically for the flash range display when the flash is in TTL
mode. Note: When the flash had is bounced or swiveled, the LCD will not display a flash range
any more. For indirect flashing the maximum flash range depends on factors which are not
available to the TTL flash control system.
Automatic Zoom Control
Your viewing angle depends on the focal length of the lens you are
using. For example, by using a 24 mm wide angle lens, you can obtain a
considerably larger viewing angle than using a 105mm telephoto lens. To align the illuminated
angle of the flash to the viewing angle of the lens, the DÖRR DAF-44 Wi flash features an
automatic power zoom flash head. The reflector automatically adjusts to preset focal lengths
ranging from 24 to 105 mm. In case your camera does not support this function, you can also
position the reflector manually. To do so, press down the ZOOM button as many times as
necessary to obtain the desired focal length on the LC display. In manual zoom mode, the letter
"M" is displayed on the LCD. The following settings are possible:
Auto Zoom ➔ 24mm
Remember that the maximum flash range changes in accordance with the focal length in use.
At ISO 100 you can read off the values for the flash range from the table below. Focal length is
indicated according to 35mm standard.
24 mm
F 2,8 0,6 - 9,4m
F 4 0,6 - 6,6m
F 5,6 0,6 - 4,7m
F 8 0,6 - 3,3m
Note: When the flash head is bounced or swiveled, the power zoom control won't work any
more. The zoom reflector returns to 50mm position, as for indirect flashing the flash coverage
angle does not match with the angle of view of the lens. Select the flash coverage angle
manually by pressing the ZOOM button.
Color Temperature and White Balance
The DÖRR DAF-44 Wi provides a color temperature of 5.500K. The automatic white balance
of digital cameras automatically selects this color temperature. Color differences can occur
with changing or mixed light. It is therefore recommended to set the white balance manually
on your digital camera. Depending on the camera model set the white balance to 5.500K or to
flash light.
Note: When taking pictures in RAW format, the color temperature can be adjusted
subsequently using a RAW converter.
TTL Flash Control with Auto Mode
Once the flash is mounted to the camera, turn on your camera and set it to auto mode. Then
turn the flash power ON. The flash is preset to TTL flash control. "TTL" is shown on the LCD.
When the flash READY indicator lights up on the flash, you simply need to press the shutter
release of your camera. Most cameras feature a flash ready indicator also in the viewfinder.
(Please refer to your camera´s user guide.) TTL flash control ensures exact illumination of
the object by controlling both the camera´s and the flashgun´s amount of light. The flash
light reflecting off the object is measured through the lens (TTL - through the lens). When the
amount of light needed for an accurate exposure has been reached, a stop signal is passed to
the flash causing the light output to be interrupted. Additionally your camera is automatically
set to the best possible aperture and exposure time. TTL flash control offers besides high
exposure accuracy and easy handling the following further advantages:
• no settings or exposure adjustments required
• extensions are automatically considered (e. g. when using extension tubes)
• filter factors e.g. of polarizing or neutral density fitlers are considered automatically
• the variable lens speed of zoom lenses is automatically considered
• the film speed in use is automatically considered
• automatic consideration of indirect flashing and diffuser plate utilization
• collects the light amount necessary for a proper exposure (TTL) only
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➔ 28mm ➔ 35mm ➔
28 mm 35 mm
0,7 - 10,9m 0,7 - 12,3m 0,8 - 13,9m 0,85 - 14,2m 0,9 - 14,8m 1,0 - 16,1m
0,7 - 7,7m 0,7 - 8,6m
0,7 - 5,4m 0,7 - 6,1m
0,7 - 3,9m 0,7 - 4,3m
50mm ➔ 70mm ➔ 85mm
50 mm 70 mm
0,8 - 9,5m 0,85 - 9,9m 0,9 - 10,4m 1,0 - 11,3m
0,8 - 6,8m 0,85 - 7,1m 0,9 - 7,4m
0,8 - 4,8m 0,85 - 5,0m 0,9 - 5,2m
➔ 105mm ➔ Auto Zoom
85 mm 105 mm
1,0 - 8,0m
1,0 - 5,6m
➔ ...