*Please note that this is a special order item and will take approximately 8-10 weeks for delivery. All special order items are non-refundable.
The Heliopan KB 18 Filter is a color conversion filter that helps to increase the color temperature from about 2600 to 5500K. This blue filter allows you to use daylight-balanced film in 40W tungsten lighting without any color casts due to the lighting. There is a 4.5x filter factor with this filter, requiring an increase of 2.6 stops for normal exposure. It is used to balance daylight film under 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. In order to bring back a reasonable color balance to the image, a KB 18 is required.
- Brass Ring Construction
- High Quality Multi-Coated Schott Glass