ND Filters

The new Genustech Black Label range of ND filters are now available.  Our Neutral Density filters are made of the highest grade of German SCHOTT B270 Glass.

ND filters for long exposures

The filters are multicoated using a process patented by our Black  Label production partner H&Y and the best Japanese metallic ND coatings.

multi-coated-scratch-resistant-filter

 

Our filters also feature a hard water repellent coating on both sides for increased protection from dirt and scratches

Our  unique manufacturing process means our filters have  superior colour fidelity and spectral performance. 

ND transmission curve

The  Genustech Black label range of Neutral Density filters will expand your exposure  options by helping you get  the aperture and shutter speed combination you want.

About Genustech Black Label

The Genustech Black Label is a select range of products from our production partners.

With Black Label, Genustech sources the best products at the best prices.

About ND filters

Neutral Density filters  are used in photography and cinematography to control the amount of light entering a camera lens. 

Neutral density filters are classified by the optical density , the corresponding f - stop reduction and light transmission. ND numbers are  be expressed in two forms, decimal or a denominator. When ND decimal form is used  the number corresponds to optical density. When using ND denominator form the number corresponds to the denominator or the bottom figure of the fractional amount of light passing through the filter.

ND filters on photography and cinematography

ND Filter Chart

ND.
number
(decimal)
ND
number 
(denominator)
Light passing as a fraction
Optical density
reduction
in
f-stops
light
transmittance
%
1 0.0 100 %
ND 0.3
ND2
1/2 0.3 1 50%
ND 0.6
ND4
1/4 0.6 2 25 %
ND 0.9
ND8
1/8 0.9 3 12.5%
ND 1.2
ND16
1/16 1.2 4 6.25 %
ND 1.5
ND32
1/32 1.5 5 3.125%
ND 1.8
ND64
1/64 1.8 6 1.563 %
ND 2.0
ND100
1/100 2.0 6 2/3 1%
ND 2.1
ND128
1/128 2.1 7 0.781%
ND 2.4
ND256
1/256 2.4 8 0.391%
ND 2.6
ND400
1/400 2.6 8 2/3 (9) 0.25%
ND 2.7
ND512
1/512 2.7 9 0.195%
ND 3.0
ND1024
also called ND1000
1/1024 3.0 10 0.098%
ND 3.3
ND2048
1/2048 3.3 11 0.049%
ND 3.6
ND4096
1/4096 3.6 12 0.024%
ND 3.9
ND8192
1/8192 3.9 13 0.012%