I've said before that color filters are not like LPR filters. There isn't an obvious improvement 90% of the time you use it. Many times I myself have not noticed any improvement using colored filters. It's that one time in ten (or twenty) that I'm glad I have them. I also have been perusing some of the filter-related websites that a Yahoo search turned up. I have found fundamental errors on all of them looked at so far. One site related to sci-astro infers that colored filters work on a reflectance/transmission principle. This is incorrect. LPR filters work via reflectance (actually interference, which is reflection at a fraction of a wavelength)/transmission; colored filters work via absorbtion/transmission. Remeber folks that, as easy as the Internet makes searching for information, it's not as if the Library of Congress were digitized on a server somewhere. These pages are put-up by anyone, and frequently contain factual errors. C. --- David Dunn <david.dunn@albertsons.com> wrote:
I agree that more sessions would be beneficial. My conclusions change frequently as I am always being taught new things.
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