Keene Electronics Catalogue Filters faq

What is a filter? A filter is simply an optical device, usually made from coated glass or sometimes resin. Its purpose is to alter in some way the light that enters the lens, and hence produce an effect on the recording. How do I attach filters to my camcorder? All camcorder lenses have a fine thread machined onto the lens barrel and the filter simply screws on over the lens itself. Be careful - do not over tighten a filter as they can sometimes be very difficult to remove. Thread sizes differ enormously from make to make of camcorder, and the thread size is usually printed around the edge of the lens, or failing that look in the technical data section of your owners manual. nb Some camcorders lens covers clip into a special plastic housing which is screwed on in the place where your filter needs to be attached. If this is the case then just unscrew the lens cap housing, fit the filter and then screw the lens cap housing back on over the filter. Can I use more than one filter at once? Yes - all our filters are threaded both sides so that one filter can be screwed on top of another. I already have some filters for my SLR camera - can I use these on my camcorder? Yes - a wide variety of step-up and step down rings are available to match the thread sizes. It is advisable to use step up rings only (ie larger filter onto a smaller lens) otherwise vignetting can occur when using the zoom at its widest setting.

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