Neutral Density Filter ND4000 77mm Premium
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.
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.
Only by using ND filters / neutral density filters such as the 77mm grey filter Premium can special image moods and atmospheres of a scene be captured appropriately - the contrast between the soft water of the stream and the razor-sharp rock structures of the shore, or the central perspective of clouds over weathered industrial monuments. The Rollei Premium ND4000 filter (12 stops / 3.6) extends the exposure time of your camera by twelve f-stops. With this grey filter for 77mm lenses, you will be able to achieve particularly spectacular long term shots with a "velvety soft" effect. By the way, the compact and practical round filters can be carried safely and comfortably in one of our photo backpacks, e.g. when travelling, hiking or trekking.
ND4000 Filter 77mm made of Gorilla Glass®* for the hard professional everyday life
Photo professionals and demanding amateur photographers often look for unusual locations, which then offer rather suboptimal shooting conditions. The material must therefore be extremely resistant and of high quality in order to deliver perfect results even after shocks, contact with pointed or sharp objects or inappropriate storage. The Rollei Premium ND4000 Filter 77mm is made of amazingly resistant Gorilla® glass from the traditional American manufacturer Corning Inc. In the US state of New York, the glass blanks have to withstand a bath in a boiling alkaline liquid in order for an ion exchange to take place at the molecular level. In this way, the filter glasses gain an enormous increase in surface tension and easily survive the challenges of the merciless professional everyday life. By the way, for the optimal use of a grey filter, you should always work with one of our Rollei tripods for DSLR and DSLM.
Coated filter glass to protect against dirt and damage - for best optical properties
The additionally applied Luminance Coating makes the already very resistant glass surface even more resistant to stubborn oil or water films as well as to heavy soiling and acts as a barrier against mechanical damage. Distortions and reflections are effectively prevented, ensuring the highest colour fidelity of Rollei round filters. You can rest assured that you will be able to write the unadulterated and colour-accurate image data onto the memory card for later use. Strict and irrevocable quality specifications have already been laid down during the development of the Rollei Premium ND4000 round filters. Constant testing in accordance with the AQL standard guarantees that even the smallest defects, which can happen without a hitch during the tests customary in the industry, are reliably sorted out. Rollei Premium ND4000 round filters are supplied with a sturdy aluminium filter ring in four sizes from 67 to 82 mm.
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