Tiffen Neutral Density (ND) filters have several uses that provide DP’s to achieve otherwise unachievable results. ND filters enable the shooter to adjust exposure without affecting color balance. ND filters appear grey and reduce the amount of light reaching the CCD’s and have four main uses:
- To enable slow shutter speeds to be used to record movement in subjects such as waterfalls, clouds, or cars
- To decrease depth of field by allowing wider apertures to be used, helping separate subjects from their background
- 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
Determining which neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Speaking generally, the 6-stop value provided by the ND 1.8 filter effectively compensates in most situations (see Technical Specifications Tab for more information on f-stop reduction).