B + W 72mm 81B Warming Wide Angle Slim Mount Multi Coated Glass Filter -
"81" series are color corrective filters that 'warm' bluish tones. They are avaible in several strengths (A, B, C & EF) with 'A' being the mildest warming effect.
•Available in all popular sizes.
- Thin construction with ultra thin optical glass. Used to prevent vignetting with today's larger wide angle lenses.
- Reduces excess blue from flash indoors or in daylight flash-fill.
- Multi coated for flare prevention.
- Warms (balances) sea, sky and high altitude shots.
- Adds healthy tone to skin tones shot in open shade or overcast.