P3D hype....eerrrr??

[John Toeppen <toeppen@xxxxxxxx>]

Mike K wrote:

"Hyper", I think,  is relative to human eyeballs...
"If one doubles the camera focal length and doubles the lens spacing,
it's still hyper, they don't cancel each other out."

Hyper should be relative to human eyeballs (yours or mine?). :-)
The term seems to be used to refer to "hyper dimensional" suggesting
"extreme in dimensional effect"

and:"I'm not sure about the stereo interest
level by themselves in that pair."

Maybe. I have posted another shot at:

http://members.home.net/toeppen/bishzoom.jpg

that zooms in on one other pair of the slides in the set.

The base is longer yet.  This shot could help one choose the best trail
to take to King's Canyon. None of those passes look especially easy, and
some are more interesting.

I fail to see the difference in cropping and zooming.  One is merely
selecting a rectangular window on the world with each shot.  The ortho
effect occurs in both cases.  Wide lenses produce curved images that can
limit acceptable cropping options. 

Short lenses produce curved images if not viewed through short lenses.
For an object to have the same angular size when viewed as it did when
it was taken the same focal length lens must be used for both taking and
viewing.  This would mean that the 35 mm taking lens on the Realist is
"best" matched with a 35mm fl viewing lens.  A red button viewer uses 50
mm fl lenses to view.  This would provide a 30% smaller angular size
thereby exaggerating the 3d effect.......??? :-)

JT
http://members.home.net/toeppen/


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