HOYA 67mm W2 Umber Warming Color Correction Filter

W2 color correction filter warms the ambient light entering the lens by 200 kelvin (+20 mired shift) by adding light amber color to the overall exposure. This filter helps fine-tune the color or look of your scene to match your film's white balance or creative vision. The Hoya W2 filter is helpful when: You are using daylight-balanced film and the light source is cooler than the desired look and you need a specific amount of color correction to match your film's color balance (5500K). Great on light overcast days or when you subject is in the shade. When shooting portraits and you want to give the skin tone a warm look. You are shooting at sunrise or sunset with daylight-balanced film (5500 K) and you want to enhance the warmth of the scene. HOYA Multi-Coat (HMC) filters are recommended for enhancing the performance of todays multicoated lenses. These popular filters minimize reflection, reduce flare and ghosting, and result in over 97% average light transmission.