B + W 52mm #102 0.6 (4x) Neutral Density Multi Coated Glass Filter
Price 38.50 USD
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. B&W Neutral Density filters are available in the following strengths: .3 (2X) #101 Reduces the light one f-stop. .6 (4X) #102 Reduces the light two f-stops. .9 (8X) #103 Reduces the light three f-stops. 1.8 (64X) #106 Reduces the light six f-stops 3.0 (1,000X) #110 (ten f-stops) & 4.0 (10,000X) #113 (seventeen f-stops) are for astronomical and sun studies