"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.

• Reduces excess blue from flash indoors or in daylight flash-fill.
• Warms (balances) sea, sky and high altitude shots.
• Adds healthy look to skin tones shot in open shade or overcast.