Formatt Hitech 4 x 4"  80D Color Conversion Filter

Formatt Hitech 4 x 4" 80D Color Conversion Schott-Desag B270 Crown Optical Glass Filter

Formatt Hitech 4 x 4" 80D Color Conversion Schott-Desag B270 Crown Optical Glass Filter

B&H # FO80D444 MFR # BF 4-CTC80D4

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Formatt Hitech BF 4-CTC80D4 Overview

  • 1Description

The Formatt 80D Glass Filter is blue. It is used to balance daylight film under artificial, tungsten or standard (household) incandescent lighting.

An 80D filter is the least "powerful" of the 80 series. When using daylight film and you'd like to leave even more yellow than if you were using and 80C filter, the 80D is the way to go. An 80D doesn't bring the temperature up to daylight as much as an 80A, B or C.

This filter allows you to somewhat "balance", i.e. bring back, correct color tone to your images. There is some loss of film speed that may require the use of a tripod but, at least, your photos will demonstrate the proper tonality they so richly deserve.

80 Series Conversion Chart

80A increases color temperature from 3200-5500K (commonly used with 3200K lamps)
80B increases color temperature from 3400-5500K (commonly used with photoflood lamps)
80C increases color temperature from 3800-5500K (commonly used with flashbulbs)
80D increases color temperature from 4100-5500K (commonly used to remove extreme orange or red)

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 discernable 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.
UPC: 886235013387
In the Box
Formatt Hitech 4 x 4" 80D Color Conversion Schott-Desag B270 Crown Optical Glass Filter
  • One-Year Warranty
  • Table of Contents
    • 1Description

    Formatt Hitech BF 4-CTC80D4 Specs

    Type 80D
    Size 4 x 4" (100 x 100 x 4mm)
    Grade Not Applicable
    Filter Factor 1.5 (+.5 stop)
    Multi-Coated Yes
    Rotating Not Applicable
    Effect Balances daylight film for use with most standard tungsten lighting, studio lighting and copy stand lighting
    Application Used to shoot daylight film under artificial (household) lighting conditions
    Color Temperature Not Specified by Manufacturer
    Construction Schott-Desag B270 Crown Optical Glass
    Front Filter Thread Size Not Applicable
    Front Lens Cap Size Not Applicable
    Packaging Info
    Package Weight 0.4 lb
    Box Dimensions (LxWxH) 2.0 x 2.0 x 2.0"

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