T3D Re: Why Scheimpflug?

[Joel Alpers <joel.alpers@xxxxxxxxxxx>]

John B wrote:


> 
> I saw an article in NASA Tech Briefs this month wherein a stereo camera
> was used but with toe in.  To get a common plane in focus, they used
> Scheimpflug.  Anyone know why they didn't just use lens shift?

If I understand correctly, Scheimpflug changes the plane of focus, 
while front shift changes the 'composition'. When using a view camera,
for example, you shift the lens up to get more of the top of a building 
to show up on the ground glass, not to change the focus plane.

In a view camera, IMHO, front tilt to adjust plane of focus is the
most important (and most common) use of camera movements. I've always
thought that the Heidescop would have been better designed with front
tilt than front rise...

I don't thing this is specific at all to "toe-in"...  please check me
if I've missed something here!+

Joel.


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