The B+W Series 7 KB 12 80B Cooling Color Conversion Glass Filter is ideal for shooting daylight film under artificial conditions.This conversion glass filter blocks red, orange, and yellow as much as possibleIt also increases the color temperature of very bright halogen and special photoflood lamps to that of daylightThis conversion filter lets you reproduce the original color of the subjectsYou can also produce a residue of warmth with weaker halogen bulbs or stronger incandescent bulbs in combination with this glass filter and daylight reversal film The B+W Series 7 KB 12 80B Cooling Color Conversion Glass Filter balances daylight film for use with most standard tungsten lighting, studio lighting, and copy stand lighting conditionsIt increases the color temperature from 3400 to 5500°K