"Eric" <none@[EMAIL PROTECTED]
> wrote in message
news:47cb1ad0$0$6949$4c368faf@[EMAIL PROTECTED]
> Q: What is the size of the smallest discrete element on 35mm
(professional
> "movie-making") film?
>
> Is it the size of a molecule or a group of molecules?
>
> IOW: How many "pixels" are on one 35mm frame of film?
>
> TIA!
This is a complex question, depending on why you are asking it (which you
should disclose).
Color films consists of grains (which are much larger than molecules). The
grains eventually give way to dyes in the development process (and the
grains of silver are removed to leave the remaining color dyes), but the
"apparent" resolution of the dyes depends on the size of the grains that
exposed the dyes.
The size of the grains depends on the speed of the film. The higher the
speed of the film, the easier it is to shoot in low light, and the larger
the grains.
If you want to know what digital pixel resolution is necessary to achieve
the same level of resolution as color movie film (without image
degradation,
that is a different question. Like film, it depends somewhat on the speed
setting of the sensor (the higher the speed setting, the easier it is
shoot
in low light, but the lower the signal to noise ratio of the digital
image).
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