The Schneider Optics 68-884405 77mm True-Match Variable Neutral Density Filter Kit is ideal for DSLR cameras with high ISO settings. It allows the user to select the lens f/stop and camera speed independent of ambient light conditions.
This carefully matched set of filters works in combination to produce a density range from 1-1/3 stop loss to 11 stops of light loss. By selecting the best quality materials, Schneider variable ND filters offer 11 stop (ND3.3) attenuation with no blue color shift at maximum density.
The kit is comprised of a Schneider 68-030177 True Match Circular Pol Filter (3.03" / 77mm), a Century Precision Optics 4" Filter Holder with 77mm Adapter and a Linear Polarizer.
This True-Match Linear Polarizer slides into the 4" (101.6mm) Filter Holder that holds Schneider Motion Picture and Television 4mm thick water-white Schott glass filters, which are available in 4 x 4 and 4 x 5.65 sizes (sold separately). The holder rotates a full 360° enabling the use of the polarizer or graduated filters, and can accommodate up to 2 glass filters. The holder includes a 77mm Wide Angle adapter ring, which can be removed from the holder with a simple pull of the brass tab located at the top of the holder to exchange for other available sizes. The included 77mm Wide Angle adapter ring can also be used with conventional step rings (sold separately) to quickly accommodate smaller filter diameter lenses.
Note! An anomaly may occur when using a Variable ND filter when shooting wide angle (50mm and below) near to or at the highest ND point on the filter. The anomoly can be a very dark area in the center of the image, or an “X” pattern with lighter frame edges.
For optimal performance, we always recommend using these filters on manual exposure. Vari-ND filters are best used for video capture at any aperture or wide aperture, high shutter speed still shooting. Schneider Optics does not recommend Vari-ND filters for smaller aperture, long exposure still shooting.