P3D Re: Twin rig exposure question

[Paul Talbot <ptww@xxxxxxxxx>]

re: Phil Palmer asks about a 2/3 stop exposure difference between the
two XA2's he twinned:

> Should I keep the 2/3 of a stop difference at higher film / shutter
> speeds ? Or is it more likely that the camera light sensors are
> just a lot less accurate at low light ?

There's really only one or two ways to answer this: a) conduct a
formal exposure test with the two cameras; or b) have the shutter
speed timings checked.

> Could the cameras be in need of a battery change ?

I would think that's possible.  Did you check their voltage, or
try new ones?

> If there is a real 2/3 stop difference in cameras am I likely to be
> able to tell when viewing the slides in a red button viewer ?

Tricky question.  You will almost certainly notice the difference when
looking at the two separate chips.  IMO, there is a high probability
that you won't be bothered by the exposure difference.  In fact, you
may find that the exposure differenc allows you to capture a little
more detail in both the highlights and the shadows in high contrast
scenes.  (I'd be interested in hearing other opinions on this theory.)

Paul Talbot


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