Hoya Y5KNFLW055 55mm FLW Fluorescent Multi-Coated Filter

The Hoya Y5KNFLW055 is a 55mm FLW-type fluorescent correction filter designed to neutralize the green color cast that warm white fluorescent lighting imparts on photographs. When shooting under these artificial lights, images often take on an unnatural greenish tint that affects skin tones, product colors, and overall scene accuracy. The FLW filter applies a magenta-tinted correction directly at the lens, restoring more natural color rendition before the image reaches the sensor. This can be particularly valuable for portrait, interior, and studio photographers who want accurate results straight out of camera and want to minimize post-processing color correction work.

Hoya equips this filter with their HMC (Hoya Multi-Coating) technology, applying multiple anti-reflective coatings to the optical glass surfaces. This reduces internal reflections that cause flare and ghosting, maintaining contrast and sharpness even when shooting toward light sources. The slim black aluminum frame threads securely onto any 55mm lens and is designed to minimize vignetting, even when stacked with additional filters. While digital white balance adjustments have reduced the necessity of fluorescent correction filters for many photographers, the FLW remains a practical tool for those who prefer optical correction or who shoot in mixed lighting conditions where auto white balance may struggle to fully compensate.