RE: Eclair Cameras: Lens Adapters

[RT <cinesota@yahoo.com>]

Hi Michael,
I would have a your tech calibrate your lenses to the appropriate 
adaptors.  Interchanging the adaptors shouldn't affect the flange 
distance.  What the tech would be calibrating for is the minute 
differences in the tolerances of the adaptors themselves and the lens 
mounts.

When you say C-mount, do you mean the actual C-mount on the ACL or the 
larger TS mount?  If you do mean the C-mount I wouldn't be too concerned 
with the flange distance as it's never going to be right for very long.  
C-mounts are notorious for improper flange depth due to wear and tear on 
the threads combined with rubbing (more wear and tear) of the back end 
of the lens against the camera.  Toss in variations on how tight some 
people will tighten a C-mount and you can see that a C-mount adaptor has 
it's problems.  If you can swing it I would recommend a TS adaptor which 
solves a lot of the above mentioned problems.

Not sure if this actually answers your question, but I hope it helps.  
Just my two cents.

Cheers,
Ray

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