Hoya 77mm PRO1 Digital ND16x (4-stop) Neutral Density ND16 1.2 Filter

Note: Above picture is just for reference.

The Hoya Pro 1D 16x (4-stop) Neutral Density Filter has several uses and offers 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.

　

Neutral Density filters enable the shooter to adjust exposure without affecting color balance. ND filters appear gray and reduce the amount of light reaching the film. Neutral density filters are available in 1, 2, 3, or 4 stops to suit individual situations. 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 2-stop value (ND 0.6) effectively compensates average situations.

　

The ND16 is a dark neutral density filter with a filter factor of 16, meaning there is 4 stop light loss. This is a great filters for slowing down shutter speeds to capture motion. An example: In daylight, maybe the slowest shutter speed possible without a filter could be 1/60 sec at F/22 By adding the HOYA PRO1 ND16, a shutter speed of 1/4 sec would be possible.
 
Another use of the ND16 would be controlling depth of field. With a strong ND16, a much wider aperture can be used. Wide apertures like F/1.4 and F1.8 create a very shallow depth of field and have the effect of isolating the subject from the background. Creative possibilities are endless with this type of filter.

　

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 situation

• 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

 

Key Features
	Digital Multi-Coated Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections
	Black Almite Frame Filters feature a black matte aluminum satin finish almite frame which reduces reflections
	Black Rimmed Glass These filters are equipped with black rimmed glass to reduce the chance of light reflecting off the edge
	Low Profile Frame Ultra thin filter frames to help avoid vignetting on super wide angle lenses are also designed to hold a lens cap
	Knurling Edge Frame These filters are equipped with a straight knurling edge for non-slip, easy attachment and removal
	UV Protected Case Filter cases are UV protected to further lengthen the life of filters

　

Specification
Type	Pro 1D Neutral Density
Grade	16x
Filter Factor	4 stops (1.2)
Multi-Coated	Yes
Rotating	No
Effect	Reduce the amount of light reaching the film To use high speed film in bright light
Application	Nature, travel, outdoor photography
Color Temperature	No change
Construction	Glass
Front Filter Thread Size	77mm
Front Lens Cap Size	77mm