35
ķ
the sensor of the flashgun cuts out the flash too soon with the result that the
actual subject is too dark. With a dark background the flash is cut out too
late so that the actual subject is too bright.
Bright background:
Open the camera aperture by 1/2 to 1 f-stop
(e.g. from f/5.6 to f/4).
Dark background:
Close the aperture by 1/2 to 1 f-stop
(e.g. from f/8 to f/11).
10. Care and Maintenance
Remove dust and grime with a soft dry cloth, or a silicon-treated cloth. Do
not use detergents as these may damage the plastic parts.
Forming the flash capacitor
The flash capacitor incorporated in the flashgun undergoes a physical chan-
ge when the flashgun is not switched on for prolonged periods. For this rea-
son it is necessary to switch on the flashgun for approx. 10 minutes every 3
months. The battery must supply sufficient power to light up the flash-ready
light within one minute after the flashgun was switched on.
11. Technical Data
Guide numbers at ISO 100/21°:
For meter systems: 45; for feet systems: 148
5 auto working apertures at ISO 100/21°:
f/2.8 - f/4 - f/5.6 - f/8 - f/11
Flash durations
:
• approx. 1/300...1/20000 second
• In M mode approx. 1/300 second at full light output
Photosensor measuring angle
: approx. 25°
Colour temperature
: approx. 5600 K
☞
☞
Film speed: ISO 25 to ISO 1000
Synchronization
: Low-voltage thyristor ignition
Number of flashes
:
50*...2000 NiCad battery
100*...2600 with alkaline-manganese batteries
140*...3600 with high-capacity alkaline-manganese batteries
(*with full light output)
Recycling time
:
7 sec. (in M mode)...0.3 with NiCad battery
13 sec. (in M mode)...0.3 sec. with alkaline-manganese batteries
11 sec. (in M mode)...0.3 sec. with high-capacity almn batteries
5 sec. (N 22)/18 sec. (N 23)...0.3 sec.
Swivelling range and locking positions of zoom reflector
:
Upwards: 15° 30° 45° 60° 75° 90°
Anti-clockwise 90° 180°
Clockwise 90° 180°
Dimensions
(w x h x d), approx.
Flashgun 92 x 247 x 102 mm
W
eight
:
Flashgun without power sources: approx. 680 g
Table 1: Guide numbers at maximum light output (Page 59)
Table 2: Chargers (Page 59)
Included:
Flashgun, camera bracket, battery housing 45-39 (only with BAT-version,
otherwise optional extra), synch cable 45-47, wide-angle diffuser 45-41,
Operating Instructions
(additionally with NiCad flashguns: NiCad battery pack 45-40 and battery
charger, see table 2).
