Sunpak 77mm 4X(0.6) Neutral Density Filter

Neutral Density filters evenly reduce the amount of light passing thru the lens without effecting color.
Ideal for reducing bright light in large aperture situations when a narrow depth is field is needed.
Allows for slower shutter speeds when blurring or showing of movement is desired.
Allows balancing of exposure to highlight a key subject.
Lets you use higher speed films in bright light.
Sunpak Neutral Density filters are available in three strengths:

(2X) Reduces the light one f-stop.
(4X) Reduces the light two f-stops.
(8X) Reduces the light three f-stops.