About the Cokin Z153 Neutral Grey ND4X Filter

Z-PRO 153 Gray Neutral Density (ND) 4x Resin Filter - Neutral Density filters have several uses and offer the possibility to achieve otherwise unachievable results. ND filters appear gray and reduce the amount of light reaching the film. They have no effect on color balance.

The Z-PRO Series is recommended for focal lengths of 20mm onwards (in the 35mm format). This filter is made of CR39 Resin which is a reputable lightweight and unbreakable optical material also used for ophthalmic glasses.

Neutral Density Filters Have Four Main Uses

To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars

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

Cokin 152 (exposure adjustment = approx. 1 stop, reduces ISO to 1/2)

Cokin 153 (exposure adjustment = approx. 2 stops, reduces ISO to 1/4)

Cokin 154 (P series only; exposure adjustment = approx. 3 stops, reduces ISO to 1/8)

Type	Z-PRO Gray Neutral Density (ND) 4x Filter
Size	100 x 150mm (4 x 6"), 1.5mm thick
Grade	4x (2 stops)
Filter Factor	Reduces ISO to 1/4
Multi-Coated	No
Rotating	No
Effect	Reduce the amount of light reaching the film To use high speed film in bright ligh
Application	Nature, travel, outdoor photography
Color Temperature	Not Applicable
Construction	CR39 Resin
Front Filter Thread Size	Not Applicable
Front Lens Cap Size	Not Applicable