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P3D Re: Hummingbirds

  • From: Dave Williams <davidrw@xxxxxxxxxx>
  • Subject: P3D Re: Hummingbirds
  • Date: Sat, 12 Jun 1999 07:34:27 -0500
Dr. George A. Themelis wrote:

> I'll tell you how the experts do it... They use twin SLRs with
> longer lenses (say 135 or 200 mm lenses).  

	I didn't think of that.  I guess my thinking was locked into the need
for a smaller stereo base for closeup work.  Is it that the longer the
focal length, the wider the stereo base needs to be for "normal"?  How
would I calculate the base for something like this?  Or would twin SLRs
next to each other with 200 mm lenses be close enough for  closeup work?

Dave


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