The Hoya 62 mm W2 Umber Warming Color Correction Multi-Coated Glass Filter is a precise optical accessory designed to adjust color temperature in photography. This filter warms ambient light by 200 Kelvin, corresponding to a shift of +20 Mired, imparting a subtle amber hue to images. With a diameter of 62 mm and a multi-coated glass construction, it effectively balances colors for daylight film at 5500 Kelvin. The filter is particularly useful for correcting cooler lighting conditions in overcast weather or shady environments, ensuring natural color reproduction. In portrait photography, it enhances skin tones with a warm, flattering glow while maintaining accuracy. The multi-coating minimizes reflections, reduces lens flare and ghosting, achieving an average light transmission of over 97% for optimal image clarity. Made from high-quality optical glass, this filter offers consistent performance in various lighting scenarios and is compatible with all 62 mm threaded lenses. Its robust construction ensures reliable color correction without compromising optical quality, making it suitable for professional and aspiring photographers seeking precise color control in their work.