Alin Flaider wrote:

> Hugo would better do a controlled experiment: 
> same scene, same day, same film and same lab. 
> Then he might support his conclusions.

This is pretty much correct, as far as it goes.  By "same
film" I'm not going to assume you mean the same ~roll~ of
film, but that would be ideal. Pros, and anyone doing critical
work, especially in color, will be sure to shoot a subject or
an assignment with film from the same emulsion batch in order
to ensure correct color throughout the project.  In this case
a single roll of film run through both cameras would be ideal,
assuring consistency of the emulsion. Two rolls from the same
batch would be an acceptable alternative.

The other thing that's important is to be sure the film gets
the same exposure through each camera.  It's best to use a
manual setting as there may be differences in the way each
camera's meter reads the scene, and therefore interprets the
exposure.  Metering off a grey card, or using an incident
meter, would be ideal.

Bracketing in the smallest possible increments would also be
valuable, as it's possible that shutter speeds and apertures
(i.e., light transmitted to the film) may not be identical for
each camera/lens combination.  Sticking a grey card into the
scene may be helpful to determine which exposures in each
camera is the closest.  It may also be of some value to
include the MacBeath color checker in the scene as well. 
-- 
Sheldon Belinkoff
CREATURE'S COMFORT
mailto:[EMAIL PROTECTED]
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