The Fusion One series filters by HOYA are a new range of filters based on HOYA's new optical technology. Its purpose is to replace the HOYA PRO1D series, which has been widely used by hobbyist and professional photographers worldwide. The word "One" in the name of this series remains as a legacy of the PRO1D series, in memory of its contribution to photographers' creativity, with the belief that this new series will serve them just as well for many decades.

The Fusion One series falls under HOYA's range of filters, utilizing all the basic specifications of high performance, such as multi-coating, extremely high light transmission, high-quality optical glass, low-profile frame, and water-repellent coating to match the new standards of the photographic optics industry. It is recommended for both hobbyist and professional photographers.