When you tilt your camera upwards at a rectangular building, the image
appears larger at the bottom than the type. Just like the "keystone" of an
brick or stone arch, the one stone at the peak of the arch that completes
the curve.
Skip
At 08:04 PM 4/25/01 -0500, you wrote:
From: "skipwilliams@xxxxxxxxxxxxxxxx" A 35/2.8 Shift is the preferred
external lens. Normal rectilinear lenses typically get too much
keystoning perspective distortion.
What's a keystone and how does it come to be applied to this kind of
distortion?
Joel W.
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