Formatt Hitech 37mm Combination 81EF/ND 0.3 Glass Filter (1-Stop)

Formatt Hitech 37mm Combination 81EF/ND 0.3 Glass Filter (1-Stop)

Formatt Hitech 37mm Combination 81EF/ND 0.3 Glass Filter (1-Stop)

B&H # FO81EFND.337 MFR # BF 37-81EFND.3

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Product Highlights

  • 0.3 Solid Neutral Density Filter
  • SCHOTT-Desag B270 Crown Optical Glass
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Formatt Hitech BF 37-81EFND.3 Overview

  • 1Description

The Formatt Hitech 37mm Combination 81EF/ND 0.3 Glass Filter, made with SCHOTT-Desag B270 crown optical glass, combines the effects of an 81EF light balancing filter with a neutral density filter.

An 81EF filter (the strongest in the 81 series) will more than replace the yellow missing from the image and place all skin tones on a distinctly "warmish" level. You might even consider using an 81EF at the beach to make a hot scene even "hotter."

Neutral density filters appear gray and reduce the amount of light reaching the film. They have no effect on color balance. They are very useful when you want to shoot high speed film outdoors on a very bright day.

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)
ND 1.2 (exposure adjustment = 4-stops, reduces ISO 1/16
In the Box
Formatt Hitech 37mm Combination 81EF/ND 0.3 Glass Filter (1-Stop)
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Formatt Hitech BF 37-81EFND.3 Specs

    Filter Type Solid ND Combination
    Combination Type 81EF Color Conversion
    Density 0.3 (1 Stop)
    Circular Size 37 mm
    Rotating No
    Front Accessory Thread / Bayonet 37 mm
    Filter Material Glass
    Coatings Multi-Coating
    Packaging Info
    Package Weight 0.1 lb
    Box Dimensions (LxWxH) 2.0 x 2.0 x 2.0"

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