Hoya Variable Density 55mm Gray Vario Filter

Hoya Variable Density 55mm Gray Vario Filter

The HOYA Variable Density Filter 3-400 has a neutral density range from ND3 (1.5 f-stop) to ND400 (8+ f-stop), this can be easily adjusted to the desired density by rotating the front ring. The HOYA Variable Density filters use high quality optical glass from HOYA.

ND (Neutral Density) filters appear gray and reduce the amount of light reaching the sensor film without affecting color balance.

• allow slow shutter speeds to show motion in the image by blurring, e.g. waterfalls and streams, fountains, clouds or moving cars.

• allow larger apertures for shallower depth of field, which helps to make a subject, such as a portrait, stand out clearly from its background.

• act as if the film speed has been lowered accordingly, so that even high-sensitivity films (i.e., above ISO 400 27°) can be used in bright daylight.

• enable film and video cameras with non-adjustable shutter speeds to take correct pictures even in bright environments such as snow and sandy beaches or in extremely bright lighting, while otherwise overexposure occurs.