Professional Soft GND Filter
The Rollei Profi Soft GND Filter is a rectangular, grey graduated filter with a soft gradient, suitable for the Pro Filter holder sets from Lee, Nisi, Cokin, Haida and Rollei, of course. A GND filter is an expanded ND Filter that attenuates to transparency towards the lower end. The upper half of the filter begins darkened and, attenuating smoothly, decreases in darkness as it flows downwards.
Light is the raw material of photographers. Therefore Rollei rectangular filters of the next generation are manufactured from genuine SCHOTT1 glass of the highest optical quality.The super-white and extremely transparent types of glass from the renowned manufacturer from Germany still allow 99 per cent of light rays to pass through after elaborate manufacturing and the subsequent, absolutely uniform coating is set for a period of 4 hours at 300 degrees Celsius.SCHOTT1 glass types exhibit a much higher scratch resistance and breaking strength than comparable products. Every square millimeter of the grey or grey gradient coating must comply with the uncompromising quality specifications of SCHOTT1 before they can be sold as Rollei rectangular filters.
In every size and at every intensity level not only do most light rays pass through the glass but the sharpness and the wealth of detail of the subject selected by you are maintained to their full extent after filtering.Greater imaging performance is hardly possible. The decades of experience and expertise of the founders of modern glass science and glass technology are contained in these unique rectangular filters and are put into the service of your creativity.
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:
- High colour fidelity
- Low reflection
- SCHOTT1 Glass
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.
Soft GND Filter with various gradients
The Rollei Soft GND Filter is available, depending on the filter-holder width, as versions GND4, GND8, GND16 and GND32. The number illustrates the degree of darkening and the number of f stop reductions.
1 All labelling rights are the property of their legal owners and serve here only for the description and/or the identification of the devices and materials.Schott is a registered trademark of SCHOTT AG.