P3D Twin rig exposure question

[Phil Palmer <phil@xxxxxxxxxxxxxxxxxxx>]

I have recently finished wiring 2 XA2's together and have shot some colour
print film for viewmagic viewing - these have come out great.

Whilst messing about with the unloaded cameras in low light I have noticed 
that the shutter on one camera stays open for longer than the other.
With a bit of experimentation I have synchronised the speeds by increasing the
film speed selector on one camera by two thirds of a stop.

Within the print film negatives I did not notice any difference in density - 
I realise print film is more tolerant to lighting conditions so based on the
fact that I intend to shoot some slide film my question is

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 ?

Could the cameras be in need of a battery change ?

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 ? 

Thanks
-- 
Phil Palmer
Oldham, Lancashire, UK


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End of PHOTO-3D Digest 2428
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