You're right, which is why I like to open up Velvia to 40 ASA. This makes
the level of saturation a little more accurate IMO.
Actually, I think that's just the correct speed of this film for me. It's
not just saturation that's at stake, but everything from highlight to
shadow detail.
My brother shoots a broader range of brackets (plus in-camera doubles) with
his Maxxum wunderbrick, and he is rather lazy about evaluating meter
readings to set exposure, since he plans to bracket anyway. When I was
coming to the conclusion that 40 ASA might be the better setting for me, I
asked him to study his best exposures from each series and he also came to
the same conclusion that ASA 40 was going to be best for him.
This is not the "proper" way to test film speed for one's taste and one's
camera. The proper way to do it is to set up a well-lit, balanced scene
with perhaps a white shirt and a gray card in it and then shoot brackets
using the ASA dial to change exposure. But when I did that, I didn't find
anything wrong with the ASA 50 setting. In the field, I seem to get
slightly different results. I think 40 must be a little more accurate,
since many people complain about the lack of shadow detail with
Velvia. Even so, a 1/3 stop difference is very small!
In any case, no one should deviate from the manufacturer's recommendations
just because somebody on a list says to. He should do his own tests.
Joel W.
At 04:48 AM 2/23/2003 +0800, you wrote:
I always think slight under a slide will make it more saturated, am I
missing something?
C.H.Ling
----- Original Message -----
From: "Joel Wilcox" <jowilcox@xxxxxxxxxxxxxxxxxxx>
> Well, as John Lind explained in his much more informative note, it very
> slightly opens the shadows and improves saturation (by making it less
> saturated, I mean). I used to shoot Velvia at 50 ASA and noted from
> studying brackets that I tended to like the slower/lighter bracket often a
> little better.
>
> You should do your own tests, however. I don't know what you'll like.
>
> Joel W.
>
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