Formatt Hitech 4 x 4" Dark Blue 47 Filter

BH #FO47444 • MFR #BF 4-BW47BLU4
Formatt Hitech
Formatt Hitech 4 x 4" Dark Blue 47 Filter
Key Features
  • For Black and White Film
  • Cuts Through Fog
  • Schott Glass
The Formatt 4 x 4" Dark Blue 47 Filter is used for outdoor photography - especially when you want to shoot in fog or haze. It helps control contrast, particularly with regards to grays where the filter will differentiate between light and dark tones.

Formatt, a company with three generations of professional filter-making experience produces every filter to the highest technical standards. The finest materials, together with state of-the-art production technology have resulted in a standard of optical excellence unmatched anywhere else.

Special Order
Expected availability: 7-14 business days
$226.80

Important Notice

  • This item is noncancelable and nonreturnable.

Formatt Hitech 4 x 4" Dark Blue 47 Filter

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Formatt Hitech BF 4-BW47BLU4 Overview

The Formatt 4 x 4" Dark Blue 47 Filter is used for outdoor photography - especially when you want to shoot in fog or haze. It helps control contrast, particularly with regards to grays where the filter will differentiate between light and dark tones.

Formatt, a company with three generations of professional filter-making experience produces every filter to the highest technical standards. The finest materials, together with state of-the-art production technology have resulted in a standard of optical excellence unmatched anywhere else.

Filters for black and white photography perform a variety of filtration effects including contrast control, enhanced skin tones, tonal corrections and more dramatic landscapes
Although originally intended for use with black and white film, this filter can also be used as a creative tool in color imaging

Absorbing Cell Technology

The secret to Formatt's consistency in filter design lies in its unique "Absorbing Cell Technology" (A.C.T.); this unique process allows color correct dyes to be applied to optically pure, wafer thin absorbing cells and offers a controllability that ensures the smoothest grad lines and consistent color across the whole filter surface
This process is revolutionary compared with conventional filter dying techniques by eliminating the need to directly coat the glass surface itself; the repeatable performance gained through A.C.T. ensures that at any time you have to swap like filters for like filters mid shoot you can do so with confidence with no discernible differences in color or density
Each filter is guaranteed flatness to a maximum 2-wave value and comes with an individual reading from a laser interferometer; every filter is carefully verified with a densitometer and spectrophotometer to ensure consistent and accurate transmission, before leaving the factory - the result is an absolute purity of image that eliminates any unwanted colorcast caused by conventional greenish soda-lime glass

Formatt Hitech BF 4-BW47BLU4 Specs

TypeDark Blue
Size4 x 4" (100 x 100mm, 4mm thick)
Grade47
Filter FactorNot Specified by Manufacturer
Multi-CoatedNot Applicable
RotatingNot Applicable
EffectControls fog and haze
ApplicationOutdoor photography
Color TemperatureNot Applicable
ConstructionSchott-Desag B270 Crown Optical Glass
Front Filter Thread Size Not Applicable
Front Lens Cap SizeNot Applicable
Packaging Info
Package Weight0.4 lb
Box Dimensions (LxWxH)2 x 2 x 2"
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