Rollei Neutral Density filter ND8 82mm Premium
Gorilla®* Glas: extremely robust and durable - high
translucency - no optical distortion
Luminance Coating: highest colour fidelity - low
reflections - scratch-resistant
Engineered & Quality Controlled In Germany: strict
technical guidelines - individual quality control in
Germany - special measuring procedure
ND filter is the abbreviation for neutral density
filter. The ND filter is used to achieve a uniformly
moderate darkening of the image. In addition, it gives
the image a uniformly neutral grey colour so that the
colour rendition cannot be altered.
An ND filter makes the subject darker by several guide
values thus preventing over-exposed images.
Frequent applications for ND filters include taking
shots with blur effects or of running water under
ND filters are used with various degrees of darkening,
depending on the prevailing light conditions for the
desired aperture and exposure time.
Neutral density filters like the 82mm ND filter (ND8) are no longer used only by nature and landscape photographers in order to be able to extend the exposure time. They are helpful in the removal of people and cars from in front of buildings for example. As a moderate neutral grey filter the Rollei Premium Round ND8 Filter extends the possible exposure time by three aperture stops and represents a good basis for different photo ideas.
Gorilla®* glass protects the device against rough treatment
The Rollei Premium Round ND8 Filter for lense size 82mm is made from the particularly resistant Gorilla®* glass produced by the American supplier, Corning Inc. The glass blanks are exposed to an extremely hot alkaline solution, which provides for an ion exchange on the molecular level. The surface tension of the glass is increased and it is insensitive to mechanical effects, weather conditions or pressure. Even if the glass surface is damaged there is no danger of further splintering of the material and scratches don’t expand.
Quality control with high standards
After a further special coating with the internally developed Luminance Coating, the filter surface possesses a kind of defensive shield against oil, water and dirt and gains enormous resistance to mechanical stresses due to the final anti-scratch layer. The high light permeability and outstanding colour neutrality is preserved by the Luminance Coating and distortions and reflections are effectively prevented. These are the best conditions, in order to secure the optical characteristics of the original subject in pure form. In order to be able to guarantee these unique optical and material characteristics, Rollei introduced a particularly stringent quality management system of its own. Rollei premium round ND8 filters were painstakingly checked several times and already in the development phase, the Rollei filter experts precisely stipulated every subsequent production step. This premium round filter is available in the nine most prevalent lens diameters from 49 to 82 mm.
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