Quote:
Originally Posted by vandergus
Where exactly does this assumption come from.
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From this site:
http://www.hoyafilter.com/products/hoya/hoya-02.html
I realise that most of the figures quoted here are for light reflectance rather than absorbance, but I thought 99% transmittance would be a reasonably estimate for a good muticoated piece of lens glass.
I was simply trying to estimate how much difference the extra elements would make to the light transmittance. I wasn't trying to make any precise statements.