----- Original Message ----- From: Dr E D F Williams Subject: Re: Dumb Newbie Q - What Color ARE Color Negatives?
> Print film colour more accurate? > > There are many different print and slide films. Which ones are you > comparing? I'm sure that this might be true for some combinations, but I > have generally found the opposite to be true. Take out the obvious garbage print films (anything made by Ferrania, for example). How have you determined the opposite? Have you compared spectral respone charts? I have. Print film and slide film generally have pretty similar spectral responses. The big difference is that print films have 3 to 5 stops more range. This gives them a huge advantage over slide film for accurate scene rendition. Slide films have approximately a 5 stop range (give or take a half stop). The average scene type is around 6 stops (yes, I have measured this with a properly calibrated Zone VI modified spot meter). By definition, slide film cannot accurately render an average scene, as it doesn't have the xposeure range to do it. This is pretty hobbling, don't you think? William Robb
