On 12 Feb 2003 at 9:09, Matt Greene wrote: > Pure (Clear) optical grade glass has no color and is > Gamma neutral.
And will if not coated reflect approximately 5% of the light hitting it's surface, a single coated piece of glass will reduce this reflection to 1-2%, SMC will reduce it to a mere 0.2%. You can test this by reflecting the sun off coated and uncoated filters towards a target under shade. Your meter measures 1/3 stops so has not sufficient resolution to measure these differences. Just because your meter can't discern the difference doesn't mean that ghost images due to reflections from uncoated glass won't affect your images. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html
