Tiffen Variable Neutral Density Filter - 77mm

The Tiffen Variable Neutral Density Filter - 77mm is a unique, versatile, and flexible tool, affording you the convenience of several Neutral Density filters in one.  Primarily used as a photographic tool for controlling depth of field and exposure, the Variable ND is easy to use, small, lightweight, and does not require additional accessories such as a mattebox.  Variable NDs are available in 52, 58, 62, 67, 72, 77 and 82mm. Contact your AbelCine salesperson for details and availability. 

Features:

• Provides 2 to 8 stops of light control
• Thin profile ring (9mm)
• Wider outer optic to help reduce vignetting at wide angles
• Comes in Tiffen Professional packaging with padded black nylon pouch
• Made with high-quality optical glass using Tiffen ColorCore technology
• Made in the USA with a 10-year mfg. warranty
• Compatible with 77mm filter threads 

Why use a Variable ND Filter?

Neutral density filters reduce the amount of light passing through the lens to your camera sensor. By reducing the light you are able to achieve the following:

• Use slow shutter speeds, with high speed film or digital cameras, to record movement/image blur in subjects such as waterfalls, clouds or any fast-moving subject
• Maintain full control over depth-of-field; decrease DOF by using wider apertures, which help separate subjects from their background
• Shoot high-speed film (above ISO 400) in bright, outdoor situations by reducing effective ISO
• Enable cine and video cameras (with fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure 

How to Care for Your Variable ND:

Your Tiffen Variable ND should be handled with care to avoid dirt, scratches and fingerprints.  Store it in its protective pouch when not in use. Your filter can be damaged by being dropped, by overexposure to extreme temperatures or humidity, improper cleaning, or by being left unprotected in direct sunlight. Use cleaners that are made specifically for cleaning filters and optical lenses and follow product instructions.
 

IMPORTANT NOTE: Only use your Variable ND within its recommended 2 to 8 stop range. If you go beyond the “MAX”, you may experience an uneven exposure or color shift that appears as an “X bar” in the image. This is more common when using higher densities on full frame cameras; however, it can be experienced on any camera.

This is a common issue involving the law of physics when combining two polarizing filters; however, this issue can be eliminated. First, adjust your focal length and then reduce the density (stop value) setting by rotating the filter ring until the color shift disappears.