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The NiSi S5 filter holder is ideal for landscape photographers who wish to combine an ultra wide angle lens with a filter system. The S5 filter holder system is constructed with aluminum alloy utilizing CNC technology. It allows the use of an integrated PRO CPI and 2 150mm filters without vignetting throughout 360 degrees of rotation. It is a new 150mm filter system which includes a multiple model adapter to allow use with selected ultra wide angle lenses.