Re: matching camera lenses

[P3D John Ohrt <johrt@xxxxxxx>]

P3D wrote:
 
> On the other hand, there are the discussions here that lead me to
> believe that the lenses must match exactly, or 3D isn't possible.
> 
> I'm wondering which impression is the most accurate, at least in
> practical terms. 


One of the pieces of information we seem to be lacking is how good a
match is good enough.  While the number of 1% has been mentioned, there
is no basis for that number that we have found,

OTH, some people merely attach two rather inexpensive camera to a board
with elstic bands and are statisfied with the results.

I am in the process of converting a cheap motorized camera for meteor
patrol work.  When I disassembled it, there was no provision for
adjusting the lens position.  The lens is nominally a 35 mm f/8.  The
tolerances are force fit plastic :-)


I suspect there is a knee in the curve somewhere short of optically
exact, but 1% is a readily noticed scale difference in my mind.

Somewhere, there is at least one text where this is discussed in
detail.  Sure wish some knew what it is!

Regards,
John
--
John Ohrt,  Regina, SK, Canada
johrt@xxxxxxx


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