Jack, I would appreciate you providing a link. I haven't done a thorough search, but what I stumbled on so far are just unsupported statements through web forums, no authoritative source. This is while all film technical documents I came across specify the same conditions for measuring RMS: 48 micrometer aperture, visual density of 1.0, etc. regardless it's negative or positive. I'd like to know what I am missing. Thanks. Servus, Alin
Jack wrote: JD> I provided conversion factor in my email (re: Pos vs JD> neg grain(RMS conversion). JD> You may have missed it. If you wish, I'll supply URL.
