Rollei Astroklar Filter User Manual
Astroklar Filter
Ø 67, 72, 77, 82 mm
The Astroklar filter is a special filter, which is ideally
suitable for astrophotography and for landscape and city
photographs at night
Effectively reduces light pollution during darkness
Manufactured from high-quality optical glass
Double-sided nanocoating
Prevents reflections
Water, oil and dirt-repellent
Neutral behaviour within the infrared light range
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The Rollei Astroklar filter, which is manufactured from highquality optical glass, is particularly suitable for astrophotography
and for landscape photography at night. As a result, the
Astroklar filter effectively reduces the light pollution in
photographs taken when it is dark.
Without Astroklar Filter
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With Astroklar Filter
The phenomenon of light pollution,
which is also called light smog, results
from brightening of the night sky, which
is usually caused by artificial sources of
light, because their light is dispersed into
the atmosphere. Just this light pollution
has a disturbing effect on the photography of astronomical objects and on
landscape and city shots
at night.
Without Astroklar Filter
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Astroklar Filter
Ø 67, 72, 77, 82 mm
Coating
In the case of the Rollei Astroklar filter, a special coating is used on it that suppresses the typical light
wavelengths of the yellow and orange-coloured light, which occur due to the usual sources of artificial
light, such as street lighting, for example. Nevertheless, the Astroklar filter behaves extremely neutrally,
particularly within the infrared light range, which is a large advantage for astrophotography.
Nanocoating
Not only does the double-sided nanocoating of the Astroklar filter prevent reflections but it is also
water, oil and dirt-repellent and thus extremely easy to clean.
Please note that depending on the subject you are photographing, the Astroklar filter is designed
to have a perceived cooling effect on your image. We recommend using manual white balance and
adjusting your colour temperature at the point of capture by between +700K and +1500K from the
chosen white balance without filter to ensure colour fidelity in the scene.
Technical data
F-Stop reduction 2/3 stop
Available in the following diameters 67, 72, 77 and 82 mm
Subject to technical changes.
Ø 82 mmØ 77 mmØ 72 mmØ 67 mm
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