Re: s/n ratio (was Re: Vs: Vs: Moving on!)

[Bruce Rubenstein]

Squeaky would like to know what value of "no noise" you are using, since 
S/N is a ratio. I would like to know why you are using a ratio for 
something that is constant? The grain for a given film doesn't vary from 
one part of the film to another. S/N ratio is useful for quantifying a 
dynamic range. Squeaky and I both think that there are good reasons for 
not expressing grain as a S/N ratio.

BR & Squeaks

[EMAIL PROTECTED] wrote:



Which brings me to a question. Has anyone tried to express film 
graininess as a s/n ratio.