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Schneider introduces new Vari-ND filters

Tips & Tricks


Keeping your filter clean is one of the most important steps you can take to maintain your filter’s highest level of performance. Dirt, dust, or grease on the front or rear surface of a filter can reduce the brightness and contrast of the image it reproduces. Regular filter cleaning is a cheap and effective way to maximize screen presentation quality.

While cleaning any filter is a simple matter, there are some guidelines that need to be followed. Improper cleaning can damage the filter surface resulting in permanently reduced contrast and sharpness.

First, use a soft camel's hair brush or air to remove any solid particles from the filter surface. This will prevent scratching during subsequent cleaning steps.

Next, you need to select a cleaning solution and tissue. Use Kimwipes, Kodak lens tissues, or a clean soft lintless cloth (there are some made for the purpose). Never use Kleenex or paper towels as they can contain abrasives. It is always best to start with the most benign cleaning fluid and progress to stronger solvents if necessary. Glass cleaner, such as Windex or Kodak lens fluid, is a good starting point. If it is ineffective, try denatured alcohol. For tougher jobs move on to Trek III (trichloroethylene) or, if all else fails, acetone. Make sure that acetone is only used as a last resort because it can remove black paint . Depending on what part of the filter is being cleaned, there may be some black paint used. Paint is often used over the black anodize to produce a flat black matte finish.


It is important to remember to apply the filter cleaner to the filter cleaning tissue before use. Never wipe a filter with a dry cloth! It will scratch the filter. Always make sure to use a new tissue each time you wipe the element.

Take your moist cleaning tissue and, starting at the center, wipe in a circular motion around the filter. Do this in one direction only. Do not back up. Discard the filter tissue frequently, usually after each wipe of the filter. You want to discard any dust or grit that the tissue has picked up rather than scratching the filter with it on your next wipe. Cleaning should be done gently and quickly. It should take no more than 30 seconds to clean one filter surface. If it takes you longer than this, you are probably working too hard and may be damaging your filter in the long run.

After the cleaning of the filter, when you are sure all grit has been removed, you may wish to lightly polish it with a soft micro pore cleaning cloth, such as the Schneider Photo Clear cloths. Polishing will remove any small streaks or smears left by the cleaning fluid. Again, it is wise to do this quickly and gently.

With this easy-to-follow process, your filter will continue to give you the same high quality presentation that it did the day you bought it.