Tiffen 67MM Neutral Density 3.0 Filter

Tiffen filters are manufactured using ColorCore technology, a closely guarded proprietary process that entails permanently laminating the filter material in between two pieces of optical glass that are ground flat to tolerances of a ten-thousandth of an inch, then mounting them in precision metal rings.

The ColorCore process allows Tiffen to control the color and density of Tiffen filters, and the characteristics of special effects filters with much greater accuracy than typical dyed-in-the-mass filters, which usually exhibit color and density variations. When Tiffen filters are ground and polished, the Colorcore is unaffected, so color and density remain uniform. Indeed, when you hold a group of Tiffen filters of the same type against a white sheet of paper, they all look identical -- because they are! Try this with or competitor's filters and you're likely to see slight variations. Maybe that's why most top Hollywood motion picture studios rely on Tiffen filters for their multimillion-dollar productions, or why Tiffen can custom-make an exact replacement for them if one breaks on the job. That's consistency and excellence - two pretty good reasons why, when it comes to filters, you should rely on Tiffen too.

The Tiffen ND 3.0 is a Neutral Density filter providing 10-stop exposure absorption. The high density blocks light emission of the visual spectrum into the camera, allowing you to photograph with a much slower shutter speed or at a wider aperture than required. This gives the photographer two techniques; the filter is ideal then for long exposures in which anything with movement in the image is desired to appear blurred. The second is in which the photographer needs to use faster or more wide open lens apertures to create less depth of field.

Features 

• Reduces amount of light passing through camera lens without changing color of scene
• Especially useful in bright light conditions to help prevent overexposure; balances exposure
• Eliminates overly bright, washed-out images
• Controls depth-of-field
• Allows slower shutter speeds to produce blurred motion effects