Hoyarex filters were arguably the best filter system made. Optically superb, several made from glass, solid filter holder, brilliant adjustable rubber hood for wide or super telephoto, and a useful range of filters. Hoyarex was a filter system developed by Hoya. Hoya was the big name in optical filters and then French manufacturer Cokin appeared …
Tag archives: diffraction
Diffraction filters explained
The diffraction filter is a special effect filter that can be found in a number of filter brands’ ranges. The diffraction filter creates spectacular rainbow coloured streaks or star bursts from highlights. Hoya made the effect popular back in the 70s with their group of filters called Spectral Star. The Hoya Spectral Star is a …