TIFFEN VARIABLE ND

FREQUENTLY ASKED
         QUESTIONS

 

Q. What sizes is the Tiffen VND filter offered in?
A. The VND is available in 52, 58, 62, 67, 72, 77 and 82mm

Q. How do I store my VND filter?
A. The VND comes with a protective soft pouch.

Q. Why can’t I attach my lens cap to the VND?
A. The VND has no outside (front) filter threads.  This is done to prevent vignetting in photos when shooting with the VND.  Since there are no front filter threads, there is no way to attach a lens cap to the VND.  We currently recommend that the filter is removed and put back in its protective pouch when transporting the camera instead of being left on the lens.

Q. Where is the VND manufactured?
A. Made in the USA with high quality optical glass using Tiffen’s ColorCore technology.

Q. How does the VND work?
A. The VND consists of two polarizing filters.  Varying the degree of cross polarization by twisting the filter controls the amount of light which passes through the filter.

Q. How do I use the VND?
A. The VND operates on the same principle as a Circular Polarizer – rotate until you reach the desired effect and shoot.

Q. What does the VND do?
A. The VND provides 2 to 8 stops of light control (approximately ND .6 to ND 2.4).  This helps to reduce the amount of light going through the lens into the camera, reducing light allows for slower shutter speeds to record movement in photos (clouds, waterfalls, etc.).  You can also decrease depth of field by using wider aperatures in bright sun, this helps to separate subjects from their background (the subject will be in focus while the background is blurred).  In addition, the VND allows movie/video cameras with fixed shutter speeds to film subjects such as snow, sand or other bright scenes which could cause overexposure.

Q. Will the VND work in the same manner on all of my lenses?
A. The amount of stops you can get out of the VND varies. A. Example, a VND on a 50mm lens will get the photographer a full 8 stops of light reduction, while a VND on a 24mm lens will only get the photographer 5 stops.

Q. Do the hash marks on the VND represent stops?
A. The hash marks on the filter do not represent actual “stops”, rather they serve as reference points.

Q. Why does the VND have MIN and MAX settings?
A. You should not adjust the VND outside of the MIN and MAX settings.  Adjusting beyond the MAX setting may result in uneven exposures or a color shift that appears as an X in the photos.  This is due to the law of physics when combining two polarizing filters.  This can be eliminated by adjusting focal length and reducing the density setting of the VND until the color shift disappears.

Q. What is the warranty on the VND?
A. The VND filter is covered by an outstanding 10 year warranty.

Q. If I have questions or warranty issues with my VND, who do I contact?
A. Please contact techsupport@tiffen.com.