Re: Answers to Questions

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

>1.  Can a beam splitter be used on a macro lens?  On a 60 mm lens??

I don't think it can be used effectively, but don't know for sure.

>2.  Can we take a 2-D picture and with scanners and other software, 
>come up with a 3-D rendition of the original?

Yes, but doing it right is not easy (sorry, don't know any details.)  
Look at Marilyn Monroe's picture in Magic 3D.
 
>3.  Has anyone tried the stereo macro lenses made (or distributed) by 
>Hugo DeWijs?  Comments??

First time I hear of that.  Any info anyone?
 
>4.  Has anyone taken stereo pictures through a stereo microscope?

Dr. T has.
  
>5.  With reference to #4, did you use a regular camera and take one 
>picture at each eyepiece (or use two cameras with one on each 
>eyepiece) or did you use a stereo (Realist) camera?

Dr. T has used a regular camera to take a picture from each eyepiece.
Your Stereo Realist Manual has info on hooking up a Stereo Realist
but the use of prisms to correct for the convergence of the eyepieces
was a problem for Dr.T.  After some experimentation with his Russian-made
stereo microscope, he says that he prefers to use his Minolta Macro
lenses directly on the camera rather than use the camera with the 
microscope.  He recently bought a true macro Minolta lens (25 mm) and
he has covered all bases as far as low-power macro stereo photography
is concerned.

>6.  Scanning electron microscope pictures are almost 3-D from the way 
>the image is produced, but is there any way to "enhance" the stereo 
>image?

"Almost 3-D" must refer to the large DOF of the instrument.  You can
take regular stereo pairs by tilting the sample a few degrees between
shots.  Dr. T has an unpublished report on recording, viewing and
measuring SEM stereo pairs.

>7.  I have the book, "The World of 3-D" but are there any other 
>references to stereo microscope p[hotography?

The only other specific reference on stereo microscope _stereo_
photography that I am aware of is in the Stereo Realist Manual.
An entire chapter is devoted to this subject.
    
> 8.  Does someone make a heat sealer for sealing cardboard Realist 
>slides or do I continue to use the family iron?

There is a commercial model available but don't know the details.

>Again, thanks to anyone and everyone who gives me an answer.  I do 
>have another question but not related to any of the above.  Do you 
>use a Revere 33 and, if so, how do you like it or not like it?

Dr. T does not use a Revere but he knows people (like Lincoln) who
do use a Revere and he tells me that they use it for the looks of it
and some alleged user-friendliness.  If you are an engineer (not an
artist) and you can handle the Realist then there is no good reason 
to use a Revere (Dr. T says that, not me!)

>Timothy A. Stabler, Ph.D.
>Department of Biology
>Indiana University Northwest
>Gary, IN 46408

George A. Themelis, Ph.D.
Department of Stereo Photography
Ohio University Southwest
Cleveland, OH 44141

PS. I am waiting for the day that Dr. Stabler will be as known for
his stereo photography skills as he is known at present for his cooking
abilities and expertise!!!


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