A fairly recent development in color filter technology has given the industry the dichroic filter . Dichros transmit certain frequencies of light while reflecting others. Due to their nature, the color of the transmitted light is different from the color of the reflected light, which are both different from the color of the dichro when viewed at a 45 degree angle. While this is an interesting characteristic of the filters that has its own set of applications, the most important thing to remember about dichroic filters is that they will produce a saturated, pure, single wavelength of light when used on an instrument. The primary reason for using dichroic filters is for the purity and permanence of color.
Plastic gel tends to burn up, especially dark colors.
Dichroic filters are expensive, but will not burn up with use, thus making them good investments. Use of information in this document implies understanding and agreement with the copyright and terms of use . Specifically, no warranty is expressed or implied regarding the accuracy of the information contained within. All trademarks are property of their respective owners. You must obtain permission from the author before using the contents of The Handbook for anything other than private use.