Heliopan's 105mm KB 6 (82C) cooling filter delivers superior color correction for tungsten film photography, neutralizing warm color casts from artificial lighting and aged photoflood lamps. With three times the correcting power of standard KB1.5 filters, it ensures accurate, neutral color reproduction under challenging indoor lighting conditions. The slim mount design features a minimal 5.4mm front rim, preventing vignetting even with ultra-wide 21mm lenses. Crafted from black anodized brass by Heliopan's Munich-based engineers, this professional-grade filter combines precision optics with thoughtful engineering for serious photographers demanding reliable color accuracy.