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This item is noncancelable and nonreturnable.
You Pay: $35.05
The Heliopan 28mm KB-3 (82C) Filter is a color conversion filter that helps to slightly increase color temperatures and provide a cooling effect. The 82C removes the red light cast that commonly occurs when photographing with 100W or less tungsten lighting. It is also useful to subdue the red-yellow color cast when photographing in the early morning or late afternoon.
There is a 1.5x filter factor with this filter, requiring an increase of 0.6 stop for normal exposure. It has a 28mm brass mounting ring that is painted a matte black to help reduce reflections. The SH-PMC multi-coated Schott glass provides greater contrast and reduced reflection compared to uncoated filters.
Type | Cooling filter |
Size | 28mm |
Grade | 82C |
Filter Factor | 1.5 (0.6 stop) |
Multi-Coated | Yes |
Rotating | No |
Effect | Slightly cools image and raises color temperature |
Application | For use when photographing in warm morning and evening light and with low-wattage tungsten lighting |
Color Temperature | Not specified by manufacturer |
Construction | Schott glass and brass mounting ring |
Front Filter Thread Size | 28mm |
Front Lens Cap Size | 28mm |