Neutral Density filters have four main uses

• To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background

• To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations

• To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure

Neutral Density Factors

• 2x = ND.3 (exposure adjustment = 1 stop, reduces ISO 1/2)

• 4x = ND.6 (exposure adjustment = 2 stops, reduces ISO 1/4)

• 8x = ND.9 (exposure adjustment = 3 stops, reduces ISO 1/8)

• As one of the premier filter manufacturers, Hoya filters continue to made from quality glass assuring the photographer clear, sharp and accurate images

• Hoya filters consistently provide even color all the way through the filter; All surfaces are ground and polished to specific thickness and tolerances

• Even non-multi-coated Hoya filters have one layer of anti-reflective coating applied to each surface of the glass; Hoya's single layer coating decreases light reflection off the surface from approx. 9% to an average of 4-5%

Size

43 mm

Grade

0.3

Filter Factor

0.3 (1-Stop)

Multi-Coated

No

Rotating

No

Effect

ND filters appear grey and reduce the amount of light reaching the film, they have no affect on color balance

Application

To use high speed films in bright sun

Color Temperature

Not applicable

Construction

Glass

Front Filter Thread Size

43 mm

Front Lens Cap Size

43 mm