■Lens filter■Adopts "super multi-coating" which has higher transmittance than conventional "multi-coating". Upgraded Color Temperature Conversion Filter Size: φ2.8 x 0.3 inches (70 x 7 mm). Product Name: 67SW4 professional. Size: φ2.8 x 0.3 inches (70 x 7 mm). Weight: 0.8 oz (24 g). Color Conversion (Warmer). Hue : Amber. Dekami Red Conversion Value: +4. Exposure Times: 1.4x (+1/2 aperture).