Heliopan 39mm KB-18 Color Conversion Filter

BH #HEKB1839 • MFR #703926
Heliopan
Heliopan 39mm KB-18 Color Conversion Filter
Key Features
  • Balances Daylight under Tungsten
  • Increase Color Temp. from 2600 to 5500K
  • 2.6 f-Stop Exposure Increase Required
  • Rugged Black Brass Filter Ring
The Heliopan 39mm KB-18 Color Conversion Glass Filter is blue. It is used to balance daylight film under artificial, tungsten, or standard (household) incandescent lighting. We have all taken indoor photos (with traditional film) that turn out yellowish. A portrait under this kind of scenario usually leads to less than desirable results. To bring back a reasonable color balance to the image, a KB-18 is required. The density of the filter requires a 2.6 f-stop increase in exposure. In some instances, that "yellowish" tint may be desired to provide a somewhat "old-style" look to the photo, but in general, it tends to be distracting and unflattering to most subjects.  
Special Order
Expected availability: 4-6 weeks
$35.05

Important Notice

  • This item is noncancelable and nonreturnable.
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Heliopan 703926 Overview

The Heliopan 39mm KB-18 Color Conversion Glass Filter is blue. It is used to balance daylight film under artificial, tungsten, or standard (household) incandescent lighting. We have all taken indoor photos (with traditional film) that turn out yellowish. A portrait under this kind of scenario usually leads to less than desirable results. To bring back a reasonable color balance to the image, a KB-18 is required. The density of the filter requires a 2.6 f-stop increase in exposure. In some instances, that "yellowish" tint may be desired to provide a somewhat "old-style" look to the photo, but in general, it tends to be distracting and unflattering to most subjects.  

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 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.

Heliopan cuts, grinds, polishes, and coats their filters with the same techniques and equipment as used for the finest German camera lenses.
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 in front of the lens has been reduced in thickness by 37% over the former mount.

80 Series Color Conversion Chart

80A increases color temperature from 3200 to 5500K (commonly used with 3200K lamps).
80B increases color temperature from 3400 to 5500K (commonly used with photoflood lamps).
80C increases color temperature from 3800 to 5500K (commonly used with flashbulbs).
80D increases color temperature from 4100 to 5500K (commonly used to remove extreme orange or red).
KB20 increases color temperature from 2600 to 5500K.

Heliopan 703926 Specs

Filter TypeKB18
Color Temperature5500 to 2600K
Filter FactorNot Specified by Manufacturer
Circular Size39 mm Filter Thread
CoatingsMulti-Coating
Physical FeaturesSlim
Filter MaterialGlass
Ring MaterialBrass
Packaging Info
Package Weight0.12 lb
Box Dimensions (LxWxH)3.6 x 2.85 x 0.55"
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