HOYA's exclusive ACCU-ND technology achieves equal reduction of the light in visible and IR spectrums. As a result, the creator doesn’t experience issues with color shift when using HOYA HD MKII IRND filters in any shooting conditions.
Neutral density filters are important for filmmakers and photographers because they allow you to precisely control the amount of light passing through the lens. For filmmakers, this means shutter speeds that match your frame-rate while maintaining creative depth-of-field control. For photographers, it means longer exposures or shallower depth-of-field in the brightest sunlight conditions.
The HD MK II IRND series applies an anti-reflection multi-coating that reduces reflections caused by scattered light rays, which is a serious concern during long exposures. A waterproof and oil repellent top-coat is applied for easy cleaning and maintenance.
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