Heliopan 77mm KR12 Color Conversion Glass Filter

BH #HEKR1277 • MFR #707718
Heliopan
Heliopan 77mm KR12 Color Conversion Glass Filter
Key Features
  • Rugged Brass Filter Ring
  • High Quality Schott Glass
  • Converts Tungsten Film to Daylight
This Heliopan 77mm KR12 Reddish-Brown Color Conversion Glass Filter allows the use of a tungsten-balanced film in daylight without a strong blue cast.

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.

Special Order
Expected availability: 4-6 weeks
$69.11

Important Notice

  • This item is noncancelable and nonreturnable.

Heliopan 77mm KR12 Color Conversion Glass Filter

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Heliopan 707718 Overview

This Heliopan 77mm KR12 Reddish-Brown Color Conversion Glass Filter allows the use of a tungsten-balanced film in daylight without a strong blue cast.

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.

It should be noted that an 85 filter produces slightly cooler results than an 85B (with tungsten film in daylight) whereas an 85B converts tungsten film to daylight. The 85C produces the coolest results - more than either the 85 or 85B. However, it is interesting to remember that an 85C is also useful as a creative warming filter with daylight film in daylight.

Heliopan Lichtfilter-Technik of Munich, Germany, has changed their black anodized brass filter rings on most Heliopan non-rotating filters to their "slim" mounts. These slim mounts are made of black anodized brass stock and have so little rim in front of the lens (5.4mm) that they will not vignette with lenses as short as 21mm.

Heliopan offers a wide selection of sizes, screw-in, series, bayonet, square and rectangular filters including digital, video, center weighted, graduated, wide angle, Kaesmann polarizers, drop-in polarizers, etc.

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.
Heliopan cuts, grinds, polishes and coats their filters with the same techniques and equipment as used for the finest German camera lenses
All Heliopan screw-in type and series size filters are mounted in precision black anodized brass rings to eliminate binding or cross threading and to ensure optimal alignment
Filters still retain front threads for a lens cap, a lens hood or even stacking a second filter
The portion of the Heliopan slim filters that are in front of the lens have been reduced in thickness by 37% over the former mount

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

Heliopan 707718 Specs

Filter TypeKR12
Circular Size77 mm Filter Thread
Packaging Info
Package Weight0.2 lb
Box Dimensions (LxWxH)4 x 3.4 x 0.6"
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