On Wed, 21 Oct 1998 22:56:11 -0500 (CDT), Yeti-Man@webtv.net (Yeti Man) wrote:

>As a responce to Wes, i was, in my circumstance, referring to
>shooting at iso40 at times (for when people are involved or when theres
>lots of red in the scene), iso50 normally, and iso64 when more
>saturation is wanted (ussually mossy green wet landscape type stuff)
>and ALWAYS developed at iso50.
> Basically, i just dial the exposure by 1/3 stop or so in the camera on
>a per shot basis depending on the situation.

Velvia seems to be color-speed sensitive...
For "normal" scenes, with meters calibrated
to give good results with the majority of
slide films, I rate it at 40. For pure red, 25;
for pure orange and yellow (flowers...), 32;
for fresh, predominantly green landscape, 64;
for bright/pure/backlit green, 64, or even 80...
I find it easier to shift the ASA rating (or
just do the exposure shift with the aperture ring,
if I'm not using TTL flash [easy with manual meters
that show the exposure on a scale with 1/3-stop
markers - just line up on the "wrong" marker...]),
since I may have already used the compensation for
calibrating the camera meter - and I'm always
checking the ASA setting...