P3D Re: Measuring Camera Base

[Greg Erker <erker@xxxxxxxxxxxxxx>]

>Can someone explain to me how the base of the camera is measure.Is it
>the distance between the two lenses,the distance from center of lens to
>center of the lens or outer edge of lens to outer edge or something
>completely different.Also what is the largest exceptable base if
>shooting between 4 to 8 feet in distance.

  Measure from the center to the center.

  By 4 to 8 feet do you mean that the
near object is at 4' and the furthest
is at 8' (ie nothing at 20' or infinity)?
Or is this a range of subjects with the
nearest being from 4 up to 8' and the far
point being at infinity?

  On John B's site he has an Excel spread
sheet called MAOFD (Maximum Allowable On
Film Deviation). It will answer you questions
based on the film format you are using, lens
focal length, near and far points. It will
give you the maximum stereo base that won't
exceed the OFD limits.
http://www.angelfire.com/ca2/tech3d/techdocs.html

Regards - Greg E.


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