More information in the higher ISO film. LZW is a near lossless
compression. With the lower ISO film, you had less information. And,
not necessarily grain information in the 800 film, you could well
have greater gamut/saturation, greater light latitude in the 800
film. The Fuji 800 films are
Rob wrote:
It looks like the excessive grain of the fast film compresses very poorly,
while the almost non-existent grain of Provia 100F compresses very well.
That sounds perfectly possible to me. Grain is a form of texture, and a
textured backround will eat up a *lot* of memory (unless it's
Lynn wrote:
That sounds perfectly possible to me. Grain is a form of texture,
and a textured backround will eat up a *lot* of memory (unless it's
mathmatical--which grain isn't, AFAIK).
Exactly. Because the grain pattern is random, it doesn't compress well.
I was just pointing out an
Richard wrote:
More information in the higher ISO film.
That's an interesting way of looking at it. I would have said the opposite;
that there is less information lost in *more* noise.
LZW is a near lossless compression. With the
lower ISO film, you had less information. And,
not
