Kaiser KR90 Operating Instructions Download Page 4

charger (8) to the mains or the car charger cable 
(5) to a 12 volt socket (cigarette lighter socket) of 
a car. The indicator LED (13) lights up red while 
charging. If charging is completed, the indicator 
LED (13) lights up green.
Note: You can use the ring light while it is con-
nected to the charger or a 12 volt car socket 
(provided that the battery is partly charged).

4. Attaching the ring light
The 77 mm connecting thread of the ring light 
screws directly in the filter thread of your lens  
(fig. E). If your lens has a smaller filter thread, use 
the corresponding adapter ring supplied with the 
ring light. There are adapter rings for 72, 67, 62, 58 
and 55 mm filter threads.
The ring light has a 1/4“ tripod thread (11) and can 
also be mounted on a tripod, ball head, swivel arm 
etc. (fig. D).

5. Operating the ring light
Put the On/Off switch (10) in position „I“ to turn 
on the light. (If the ring light does not light up, 
check of the dimmer (12) is set to minimum.)
Light output can be adjusted continuously by 
turning the dimmer knob (12). The change in co-
lour temperature is only marginal.
Light intensity does not go down when battery 
voltage decreases.
Set the On/Off switch (10) to „0“ when the ring 
light is not in use.
The ring light shuts off automatically if the batte-
ry needs to be recharged.

6. Safety notes
Avoid improper use and use your ring light only 
with dedicated equipment.
Make sure that 
- both water and flammable substances and li-

quids are kept away from the unit,

- the ring light is not covered during operation.
After operation let the unit cool down before 
boxing or packing it and make sure that it is 
switched off.
Do not open the housing of the ring light.
Repairs must be carried out by qualified per-
sons only.

7. Maintenance and care
The ring light is maintenance-free. Make sure, 
that the front panel (2) is free of stains and dirt. If 
necessary remove these before operation.
Clean the light with a soft, dry cloth. On no ac-
count use petrol or other cleaning agents and 
solvents.
If the ring light is not used for a longer period 
of time, a trickle charge is recommended from 
time to time.
Use the supplied protective bag (3) to store or 
carry the light.

8. Specifications
Ring light

Light source:  

30 three-chip high performance LEDs

Colour temperature: approx. 5500 Kelvin
Illumination:  

approx. 1850 lux at 30 cm (11.8 in.) 
approx. 675 lux at 50 cm (19.7 in.) 
approx. 170 lux at 1m (39.4 in.)

Angle of coverage (angle of half intensity): 

110°

Minimum working distance:  3 cm (1.2 in.)
Battery type: lithium-ion
Battery capacity: 1500 mAh
Operating time:  

approx. 2 hours (at full light output, longer 
when dimmed)

Charging time: approx. 2.5 hours
Operating voltage:  12 volt
Main body: duralumin
Dimensions: diam. 142 x 34 mm (5.6 x 1.3 in.)
Weight: approx. 350 g (12.3 oz.)

Quick charger 

AC 100 - 240 volt, 50/60 Hz
DC 12 volt / 1 amp

Right reserved to make technical modifications.   

3250_Bedien.indd   5

06.09.13   13:43

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