[photo-3d] Chromatic Aberation/Chromostereopsis

[shab@xxxxxxxxxxxxxx]

You can see an example of Chromatic Aberation/Chromostereopsis in
illustration #5 at:

http://www.easystreet.com/~shab/Perception.htm


>Message: 16
>   Date: Mon, 5 Feb 2001 15:04:01 -0600
>   From: "Dr. George A. Themelis" <drt-3d@xxxxxxx>
>Subject: Re: Chromatic aberration / chromostereopsis
>
>> In a holmes viewer, because of the _prismatic_ element in the optics,
>> chromatic aberration is in opposite directions for the left and right
>> views.
>
>Thanks Boris and John for the detailed explanations.
>Now we need someone to photograph the effect
>for Monte.
>
>The reason I have missed this is that I usually freeview prints
>or use good viewers.  I don't use the cheap plastic ones.
>And in slide viewers this is not an issue because of the
>symmetry of the lenses.
>
>Only when I use the cheap Radex viewer to view relatively
>flat stereo pairs, I notice a spherical distortion as if the
>flat image is painted on the surface of a sphere.  If the
>image has depth then you don't notice this.  Which brings
>two comments in my mind: 1) to test lenses for depth
>aberrations it is better to look at a flat image.  2) While
>relatively flat stereo pairs still look great in a quality viewer
>(pictures are sharp, image is enjoyable as if the real distant
>scene is viewed with bare eyes), the same "flat" stereo
>pairs look terrible in cheap viewers because all the
>"depth" comes from distortions.
>
>George Themelis
>