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Same size from camera's perspective. Kirk

"Fabien Mosen" <fab### [at] skynetbe> wrote in message
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> Same size from camera's perspective. Kirk

Well yeah, but if you're projecting onto a plane (which we are) then you
gain the distortion. This is why fisheye doesn't get this distortion, as it
effectively projects onto a sphere (so the projected size corresponds to the
angle subtended at the camera, the size "from the camera's perspective").

Though I'm not 100% sure what a real camera does, probably somewhere
in-between as a consequence of the lens bending the light...

--
Tek
http://www.evilsuperbrain.com

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Kirk Hubbell wrote:
> 
> Same size from camera's perspective. Kirk

Wrong !  The camera doesn't roll.

Fabien.

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Tekno Frannansa wrote:
> 
> > Same size from camera's perspective. Kirk
> 
> Well yeah, but if you're projecting onto a plane (which we are) then you
> gain the distortion. This is why fisheye doesn't get this distortion, as it
> effectively projects onto a sphere (so the projected size corresponds to the
> angle subtended at the camera, the size "from the camera's perspective").

Right.

> Though I'm not 100% sure what a real camera does, probably somewhere
> in-between as a consequence of the lens bending the light...

A real camera is closer to ultra_wide_angle.  The distortion happens,
but a little less than with a perfect plane projection.

Fabien.

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