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Rollei Pro Square Filter Reverse GND8 (0.9) for 100mm

  • Professional square foto filter
  • High colour fidelity
  • Low reflection
  • Optical HD glass
  • Nano-tempering

Reverse GND Filter

A reverse GND rectangular filter, also known as a grey graduated filter, has the greatest degree of darkening in its centre. The reverse GND filter quickly (concisely) attenuates to transparency from the centre downwards. Upwards, the filter attenuates to light grey.

High-quality glass processing

To obtain excellent photo quality, your photo equipment must, of course, be of high quality. This is why our Rollei Profi Rectangular Filters are made of real glass and processed to a high standard. The filters are made of fine, annealed H-K9L optical glass and are multiple-coated on both sides.

Because of the high-quality processing of the glass, these four quality features of Rollei Photo Filters are guaranteed and set new industry standards among the commonly used ND sets:

  1. High colour fidelity
  2. Low reflection
  3. HD optical glass
  4. Nano-tempering

High colour fidelity for your photos

Rollei Profi Filters have no colour distortion that is perceptible to the naked eye, and Rollei Profi Filters have no colour casts. This has been confirmed in independent testing by Chip magazine and experienced by professional photographers who usually work with filter systems from Lee, Nisi, Cokin or Haida.

Rollei Profi Filters have a (graduated) coating that uniformly lets in light (from ultraviolet almost up to infrared) through the filter. Unlike plastic resin filters and laminated filters, whose colour fades over time and whose bonding can easily come apart, the glass in Rollei Filters is extremely durable and does not fade.

If the light obscuration does not cover the whole spectrum of visible light, colour faults appear. With cameras, the visible light lies between 420 nm ~ 680 nm. The flat spectrum curve means that the light attenuation rate is relatively high and thus less visible light penetrates the filter. If light can penetrate the filter uniformly there are no colour casts. Rollei Filters meet this important requirement.GND_Filter_Glass_english

Reverse GND Filter – Versions and Sizes

A GND8 version of the Rollei Profi Reverse GND Filter von Rollei is available. The number indicates the degree of darkening and the number of f stop reductions, also termed the gradient.

This Reverse GND Filter is available for filter holder sets from Rollei, Lee, Nisi, Cokin and Haida in widths of 70 mm, 100 mm, 150 mm and 180 mm.

Using Reverse GND Filters

A Reverse GND Filter is used for subjects that are very bright at the focal point in the centre. Take, for example, a sunset by the sea where the sun is close to the horizon. The same thing applies with a sunrise of course.

The very bright focal point of the image is darkened using a reverse GND filter. The sun is able to be given full expression, the sky and the water are well exposed, and the contours can be clearly seen. Even with photo processing, you cannot correct when the sun is over-exposed and the image information is lost in the over-exposure. For landscape photographs of professional quality, a reverse GND filter is indispensable and really works wonders. When using filter holder systems from Rollei, Lee, Nisi, Cokin or Haida, you can use one or two Reverse GND Filters at the same time for creative and impressive picture art works.

For what lenses and holders are they suitable?

For universal use you need to know your lens diameter.  The filter holder for 70 mm filters can be used on lenses with a maximum filter thread of 58 mm. With the enclosed adaptor rings it can also be mounted on 52 mm lenses. Optional adaptor rings extend use to lenses with filter threads of 40.5 mm, 49 mm and 55 mm.

The 100 mm filter holder  can be mounted on lenses with a filter thread of 82 mm to 62 mm. Additional adaptor rings of 62 mm, 67 mm, 72 mm and 77 mm are included with delivery.

For 150 mm filters, filter holders are available for the Tamron SP 15-30mm F/2.8 Di VC USD wide-angle lens , the Canon EF 14mm 1:2.8 L USM II and the Nikon AF-S Nikkor 14–24 mm 1:2.8 G ED. With the adaptor rings that are available as an option for the Nikon filter holder you can extend the range to include AF-S NIKKOR 24-70 mm 1: 2.8E ED VR, AF-S NIKKOR 70-200 mm 1: 4G ED VR and SIGMA  12-24mm f/4.5-5.6 EX DG HSM II lenses.

The 180 mm Profi Rectangular Filter-Holder for 180 mm filters fits the Canon EF 11-24mm f/4L USM lens.

These Rollei Pro Filters are fully compatible with holders from Lee, Nisi, Cokin and Haida, all of the filters made by these manufacturers also fit perfectly into the Rollei Pro Filter holders. The Rollei product philosophy is to always provide maximum flexibility to photographers.

Rollei Pro Filter Holder

Fitting Lenses

 For 70 mm Filters

Rollei Pro Rectangular Filter-Holder Set (incl. 62 mm CPL Filter)

Fits any lens with 49mm, 52mm, 55mm, 58mm filter thread

Rollei Pro Filter Adaptor Ring 40.5 to 58 mm, complements 70 mm Filter-Holder Set

Permits use of the 70mm filter-holder set on lenses with a 40,5mm filter thread

Rollei Pro Filter Adaptor Ring 49 to 58mm, complements 70mm Filter-Holder Set

Permits use of the 70mm filter-holder set Set on lenses with a 49mm filter thread

Rollei Pro Filter Adaptor Ring 55 to 58mm, complements 70mm Filter-Holder Set

Permits use of the 70mm filter-holder set Set on lenses with a 55mm filter thread

For 100 mm Filters

Rollei Pro Rectangular Filter-Holder Set (incl. 86 mm CPL Filter)

Fits any lens with 52mm, 55mm, 62mm, 67mm, 72mm, 77mm and 82mm filter thread

For 150 mm Filters

Rollei Pro Rectangular Filter-Holder for Tamron15-30mm

Tamron SP 15-30mm wide-angle lens F/2.8 Di VC USD

Rollei Pro Rectangular Filter-Holder for Canon 14mm

Canon EF 14mm 1:2.8 L USM II

Rollei Pro Rectangular Filter-Holder for Nikon 14-24mm

Nikon AF-S Nikkor 14–24 mm 1:2,8 G ED

Rollei Pro Filter Adaptor Ring for Nikon 14-24, complements holder for Nikon 14-24 mm

AF-S NIKKOR 24-70 mm 1: 2.8E ED VR    
AF-S NIKKOR 70-200 mm 1: 4G ED VR

Rollei Pro Filter Adaptor Ring for Sigma 12-24, complements holder for Nikon 14-24 mm

SIGMA  12-24mm f/4.5-5.6 EX DG HSM II

Rollei Profi Rechteckfilter Halterung for Olympus M.Zuiko Digital 7-14mm 1:2.8 for 150mm

Olympus M.Zuiko Digital 7-14mm 1:2.8 for 150mm

For 180 mm Filters

Rollei Pro Rectangular Filter-Holder for Canon 11-24mm

Canon EF 11-24mm f/4L USM

Dimensions

Width 10 cm
Height 15 cm
Depth 0.2 cm
Weight 75 g
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