Formatt Hitech 105mm Combination 85B and Neutral Density (ND) 0.9 Glass Filter

Formatt Hitech 105mm Combination 85B and Neutral Density (ND) 0.9 Glass Filter

Formatt Hitech 105mm Combination 85B and Neutral Density (ND) 0.9 Glass Filter

B&H # FO85BND.9105 MFR # BF 105-85BND.9
Formatt Hitech 105mm Combination 85B and Neutral Density (ND) 0.9 Glass Filter

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  • 1Description

The Formatt Combination 85B/Neutral Density Glass Filter is a very unique filter that offers possibilities that other filters don't.

Neutral Density Filter
Neutral Density filters have several uses and offer the possibility to achieve otherwise unachievable results. ND filters appear grey and reduce the amount of light reaching the film. They have no effect on color balance.

85B Color Conversion Filter
An 85B filter will produce natural colors when shooting with tungsten film outdoors. What do you do when you must take some photos outdoors and all you have left is tungsten film? Using tungsten film in daylight will produce a bluish cast in the photograph. The 85 series of filters will "bring back", i.e. color balance the tones in your images. These yellow filters are used to correct differences in color temperature between the recording medium (film/video) and the light source.

Note: Whereas the 85 series is used for tungsten film under daylight conditions, use the 80 series of filters when using daylight film under tungsten lighting

85 Series Color Conversion Chart

An 85 decreases the color temperature from 5500-3400 Kelvin
An 85A decreases the color temperature from 5500-3100 Kelvin
An 85B decreases the color temperature from 5500-3200 Kelvin
An 85C decreases the color temperature from 5500-3800 Kelvin

Neutral Density filters have four main uses

To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure

Neutral Density factors

ND.3 (exposure adjustment = 1 stop, reduces ISO 1/2)
ND.6 (exposure adjustment = 2 stops, reduces ISO 1/4)
ND.9 (exposure adjustment = 3 stops, reduces ISO 1/8)
ND1.2 (exposure adjustment = 4 stops, reduces ISO 1/16)
In the Box
Formatt Hitech 105mm Combination 85B and Neutral Density (ND) 0.9 Glass Filter
  • One-Year Warranty
  • Table of Contents
    • 1Description
    Filter Type Solid ND Combination
    Combination Type 85B Color Conversion
    Density 0.9 (3 Stops)
    Shape Circle
    Circular Size 105 mm
    Rotating No
    Front Thread / Bayonet Unthreaded
    Filter Material Glass
    Coating Multi-Coated
    Packaging Info
    Package Weight 0.3 lb
    Box Dimensions (LxWxH) 2.0 x 2.0 x 2.0"

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