Mark II ND rectangular filter - neutral density filter 100 mm

Gray filter 100 mm made of Gorilla Glass

The Rollei professional ND filter 100mm are gray filters with a neutral gray tint in a rectangular shape - so-called square filter . The abbreviation ND stands for Neutral Density , which one light tightness is meant. Colloquially, there is also talk of swallowing the light, since ther ND filters reduces the amount of light entering.

This is done using a uniform darkening of the filter glass in neutral gray, which is also the alternative name„gray filter“ explained. It is particularly important here that the ND filter remains neutral in color and translucent despite the gray tint, which the Rollei gray filters guarantee thanks to Gorilla Glass and special multiple coating.

Of the ND filter Rollei's Mark II generation is available in different intensities / optical densities. This is relevant in combination with the exposure time and the aperture setting. The square filter ND1000 has 10 stops, which means that the amount of light decreases by 10 f-stops.

Overall there are the following intensities of the Rollei ND Filter Mark II: ND8 (3 stops), ND64 (6 stops) and ND1000 (10 stops).

Long exposure with gray filters

Many situations present themselves for one gray filter to use sensibly. For example, flowing movements that the human eye cannot perceive in an image. Through ND filter r you can use the Increase shutter speed to achieve specific effects. For example, show flowing movements.

Fog showers, rivers, waves, lakes, cloud streams are all typical situations in which you can ND filters can work. The flowing movements are captured by the long shutter speed and the light is swallowed accordingly by the gray filter in order to create a gentle, soft and calm image in which the movements can still be guessed at.n.

ND filter made of high-quality Gorilla* glasss

Rollei grabs for its particularly high quality square filter on gorilla®*-glass back. The filter glasses of the current production series are not only extremely weather-resistant, but also do not lose their optical properties through careless or extremely rough handling. The special treatment of thegorilla®*-Glass A precisely planned exchange of ions, which not only protects the raw material better against mechanical pressure, but also significantly counteracts cracks and scratches through increased surface tension, starts directly at the molecular level with a bath in a boiling hot alkaline solution. Even with deeper damage, the coating prevents further material chipping at the edges..

gorilla®*-glass is already "inherently" particularly translucent and distortion-free. The special type of glass ensures that these excellent optical properties are not impaired by dirt or damage. In addition, the filter glasses benefit from the special coating developed by Rollei, the quality of which is regularly and strictly monitored.

Not only demanding photographers are among the beneficiaries of the extraordinary properties ofgorilla®*-Glass, the displays of premium smartphones and tablets are also made from this particularly durable material. The American company Corning Inc. can look back on more than 160 years of experience in the production and treatment of special glasses and optics. The Rollei rectangular filters can therefore be made from only 2 mm thin Gorilla* glass and easily meet all the quality requirements that we place on Rollei professional filters with a particularly low weight..

Gaussian filter with special luminance coating

Reflections can add a unique look to photos or ruin them completely. In order to use these optical effects in a targeted manner, accidental occurrences must be reliably prevented. For this purpose, Rollei now relies on a specially developed special treatment for our particularly high-quality filter glasses. The extreme light transmission and color fastness are not affected..

The special procedure is based on very precise specifications from Rollei, compliance with which is constantly checked and can also lead to complete deliveries being rejected. This temper is also excellent for the already extremely resilient, neutral and brilliant gorilla®*-Glass our professional square filter.

As a photo professional or demanding hobby photographer, you benefit twice over. You don't have to worry about possible reflections when choosing a location and you can rely on the impressive weather resistance and robustness of the additionally coated Rollei rectangular filters gorilla®*-Glass completely abandoned even in extreme situations. Even bad bumps or unintentional contact with sharp and pointed objects make the coated and color-neutral filter glasses surprisingly little.

The optical tolerance values leave no room for quality defects: the color curves of the glasses must be absolutely homogeneous in the range from 400 to 800 nm, otherwise they may not bear the Rollei name. You can add reflections, color shifts or special effects afterwards - the image material provides a neutral, reflection-free and distortion-free basis for your creative ideas.r.

ND Filter Engineered And Quality Controlled in Germany

Quality is not a one-off event, but a continuous process that has to be improved again and again and adapted to the wishes of the customers and the possibilities of the technology. Therefore, after careful and intensive preparatory work, we at Rollei have introduced an exceptionally strict quality management system that permanently ensures the high quality of our professional filters. As "Engineered And Quality Controlled in Germany", this QM strategy documents various procedures and framework conditions that far exceed the standards customary in the industry. We proceed in an extremely structured manner and leave no result to chance:

All subsequent production steps are based on Rollei's specifications and quality expectations.

The particularly high-quality Rollei rectangular filters for photo professionals and demanding amateur photographers cover optical properties that could not be guaranteed at the same time with lower quality guidelines. Therefore, all criteria must be met at all times, compromises in one discipline would also immediately affect other aspects. Consequently, the release of new production samples is exclusively in the hands of Rollei's filter specialists.

For Rollei, however, series production does not in any way mean a relaxation of expectations. Prior to the delivery of the production batches, there is merciless quality control according to the AQL principle (Acceptance Quality Limit): If a precisely calculated quantity of randomly tested products falls through the grid, the entire batch receives it no release..

The filters delivered then have to pass a final check at Rollei again according to the strict AQL specifications before the products can finally be delivered to retailers and end customers.n.

In view of the already extremely high-quality raw materials and taking into account the comparatively large amount of rejects, the quality principle "Engineered And Quality Controlled in Germany" may seem a bit too strict for some customers, but you can always rely on the quality of your professional filters from leave Rollei..

*Note: Gorilla®-Glas is a protected word mark of the company Corning and is used by us for our filters. All rights to the name belong to the company Corning..

Technical specifications

 *Note: Gorilla®-Glass is a protected trademark of the Corning company and is used by us for our filters. All rights to the name belong to the Corning company..

scope of delivery

• 1x Mark II ND filter 100mm
• 1x case
• 1x cleaning cloth