B+W 52 415 UV Spezial 1X Filter

The B+W 52mm 415 UV Spezial 1X Filter is a highly specialized, sharp-cutting optical filter designed to aggressively block intense ultraviolet radiation up to the absolute edge of the visible light spectrum (415 nanometers). Unlike standard UV-Haze filters intended for general daylight photography and lens protection, the 415 is engineered for highly specific technical applications, most notably ultraviolet fluorescence photography. By placing this filter in front of the camera lens, photographers and scientists can completely block the invisible UV excitation light from reaching the sensor, ensuring that only the glowing visible fluorescence of the subject is recorded. It also plays a vital role in preventing severe UV-induced chromatic aberration in highly sensitive analog or digital scientific imaging setups.

Despite its intense filtration properties, the filter boasts a transparent 1X filter factor, meaning it freely passes visible light without requiring any exposure compensation or shutter speed adjustments. The optical element is crafted from premium Schott glass, ensuring uncompromised resolution and clarity for demanding macro or studio work. To withstand the rigors of professional environments, the glass is securely mounted in B+W’s signature heavy-duty brass filter ring. This robust brass construction actively resists temperature-induced expansion and contraction, preventing the filter from binding, jamming, or cross-threading on your delicate lens threads during critical field or laboratory work.