P3D Re: PHOTO-3D digest 2828

[Project3D@xxxxxxx]

In a message dated 07/07/98 18:13:39 GMT, you write:

<< Date: Tue, 7 Jul 1998 01:29:19 +8
 From: "Bob Howard" <bobh@xxxxxxxxxxxxxxxxxx>
 To: photo-3d@xxxxxxxxxxxxxxxxx
 Message-ID: <199807070829.BAA23735@xxxxxxxxxxxxxxxxxx>
 
 RE: Bryan wonders if several pairs of stereo pix could be scanned 
 onto "holographic" film to make a hologram?
 I wonder if he knows what a hologram is? My understanding is that a 
 captured hologram image (on hologram film which is contasty and 
 fine enough to capture it) is NOT a real image made with a camera 
 lens (such as the stereo pairs would be) BUT is a record of 
 wavefronts of light from an object captured in mid-distance. When 
 illuminated properly (laser in real hologram) thedeveloped holograph 
 film generates the wave fronts and they continue onto the observer 
 and the three dimesional original object is seen. I think that he may 
 be thinking of some kind of lenticular display which is sliced strips 
 of many lens image viewpoints in a real image. 
 BobH >>

Well, there are ways of making holograms from film records - my friend David
Pizanelli showed me some wonderful composite holograms that he had constructed
from Muybridge's images. Very effective, but I haven't a clue how they were
made...

I also have a couple of true holograms of my set of 7 perf stereo cameras - a
Belplasca, an Iloca 1 and a Verascope F40. Later I got a rainbow hologram of
the same image which is much easier to light and view...

Bob Aldridge


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