Does this just relate to a wider exposure lattitude? If you the
exposure lattitude of the neg is wider than the paper (as is the case
for most colour C41) then over or under exposing by a stop or two can be
corrected at the printing stage with no noticeable effect as the final
print will always be 18% grey by default.
Rob Brigham
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]
Sent: 21 May 2001 15:40
To: [EMAIL PROTECTED]
Subject: Re: Chromogenic B&W Film
While I haven't shot chromogenic B&W since 1987, I distinctly remember
more
than one review citing the frame-by-frame flexibility, at least for
Ilford
XP-1. I can't recall "what happens" to the +2 or -2 ISO frames; they
werern't rendered less usable, just different. I don't believe it was
about
grain.Contrast, perhaps?
What do the chromogenic filmmakers' websites say? Is this claim
currently
being made?
Shel Belinkoff <[EMAIL PROTECTED]> wrote:
Subject: Re: Chromogenic B&W Film
[EMAIL PROTECTED] wrote:
>
> Indeed, a key attribute of these films
> is that you need not commit the
> entire roll to one ISO setting. Rather,
> you can choose your setting, frame
> by frame, without fear that you will under-
> or overexpose the other frames.
That doesn't sound right, and is counter to my experience. Some
time ago I did what I called a "typical consumer shoot" and used
three different rolls of C41 B&W film. The idea was to shoot the
rolls and just drop 'em off at the handiest lab I could find. One
roll - perhaps Ilford - was shot using variable EIs and the results
were all over the place. They were terrible.
I can see shooting an entire roll at one EI, 200, 400, 800, and
getting consistent results, but not shooting as you've suggested.
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