SMPTE Standard: For Motion-Picture Film Photographic Audio Record — Spectral Diffuse Density
SMPTE Journal · 1992
4 American National Standard spectral density of photographic audio record on three-component subtractive color films American National Standard spectral diffuse density of photographic audio record on three-romponent Annex A (informative) Additional data subtractive color films is American National Standard diffuse transmission density as measured with an instrument haVing a response of 2O-nm bandwidth peaking at 800 nm ± 5 nrn, with at least 80 percent of the overall response of the instrument falling within the 20-nm bandwidth.CAUTION NOTICE: This Standard may tie rev,se<!or witndravmal any tim-e.The procedures of the Standard D81/el~fsquire mat ecuen be lak~to reaffirm.revise .or withdraw this stafldard no laler than five ye-arsfrom the dale 01publication.