I'm betting on marketing in most cases, there may be some special filters, say the magenta correction filters for the Leica M8, but really there should be no real difference, light is after all light. Then again I thin special digital lenses are mostly marketing hype as well.

Nuno Miguel dos Santos Baeta wrote:
Hello PDML!

Several brands, such as Hoya and Rodenstock (the ones I can easily buy
in Portugal), have filters design for digital cameras and the other
filters for film cameras.

Is this just marketing or do these filters 'excel' when used in
digital cameras?  If they 'excel' with digital cameras, which is their
behavior when used in film cameras, compared to as similar as possible
(?!?) 'film filters'?

BTW, I want to buy two circular polarizing filters.

Thanks in advance!



--


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fool, and he might possibly be a damned soul; but if he may not, he is not a 
free man any more than a dog.

        --G. K. Chesterton


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