Heliopan 62mm KB-18 Color Conversion Filter

The Heliopan 62mm 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.