Rollei Mark II Soft GND User Manual
Pro Square Filter
Mark II Soft GND
www.rollei.com
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1. Gorilla®* Glas
Extremely robust and
durable
High translucency
No optical distortion
2. Luminance Coating
Highest colour fidelity
Low reflections
Scratch-resistant
3. Engineered & Quality
Controlled In Germany
Strict technical guidelines
Individual quality control
in Germany
Special measuring
procedure
Image with soft GND filter
Image with Soft GND Filter
Image without soft GND filter
Engineered &
Quality Controlled
in Germany
*Gorilla® is a registered trademark of Corning Inc.
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Pro Square Filter
Mark II Soft GND
www.rollei.com
www.rollei.com/social
Technical data
1. Gorilla®* Glas
Thanks to its unique surface coating, the filter glass resists even the most adverse environmental conditions such as scratches and shocks or constant contact with the material. Distortion-free and highly
light transmissive, this special glass is used for particularly high-quality photo products.
2. Luminance Coating
This special coating considerably increases the resistance of the optical surface to scratches and
damage. At the same time, of course, the colour fidelity and light transmission of the various filter
models are retained to their full extent.
Other manufacturers
Resin Glas GND Graubereich T%
10 0
80
60
40
20
0
350 450 550 650 750 800
Resin Glass GND Curve
NM
Rollei
Nano coating GND Grey area T%
10 0
80
60
40
20
0
350 450 550 650 750 800
Nano-coated glass GND Curve
NM
Modus operandi
GND filter is the abbreviation for “graduated neutral density filter”, also called grey
graduated filter.
A grey graduated filter is employed to balance the difference in brightness of the horizon.
Generally, a soft GND filter is used to take shots whenever the sky is much brighter than the land
or vice versa, when the city is much brighter than the sky.
This filter then has the same effect at the top edge as a grey filter; this effect attenuates
uniformly towards the bottom.
Technical data
Grey graduated filter Soft IR GND4 Soft IR GND8 Soft IR GND16 Soft IR GND32
Optical density 0.6 0.9 1.2 1.5
F-Stop reduction 2 stops 3 stops 4 stops 5 stops
Material Gorilla®* Glass
Available in the widths 100 mm, 150 mm und 180 mm
*Gorilla® is a registered trademark of Corning Inc.
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