Hoya Neutral Density Filters>58mm Neutral Density 4x (ND4) HMC Filter

1. To enable slow shutter speeds to be used, especially with fast films, to record movement in subjects such as waterfalls, clouds, cars, seas etc.
2. To decrease depth of field by allowing wider apertures to be used which helps separate subjects from their background.
3. To decrease the effective ISO of high speed film (ie: above ISO400) and allow it to be used outdoors in blight situations.
4. To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes that would normally cause over-exposure.

HMC (Hoya Multi-Coated) filters are renowned for their ability to minimise reflection at the filter surfaces which reduces flare and ghosting. The result is an average light transmission of over 97%, giving sharp contrast and well balanced colour. HOYA HMC filters are recommended for enhancing the performance of today’s multicoated lenses.