this is all taken care of in the right software. reprojection isn't hard if you know the lens FOV. most software assume a distortion free lens, but most programs can correct for symmetrical barrel or pincushion distortion and vignetting too. doing it in Photoshop assumes that you are using a lens near "normal" FOV or longer. stitching images taken with very wide angle lenses requires compensating for the lens FOV.
Herb.... ----- Original Message ----- From: "John C. O'Connell" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, September 22, 2004 12:47 AM Subject: RE: Large Format vs. Digital/Stitching > If you pan the camera to take the sequence of photos > to be stitched later, isnt the fact that the camera > back is panning going to give you a curved "plane" > of focus or in the case of vertical as well as > horizontal panning, give you a spherical "plane" > of focus? > > I would think this could be masked with small apertures > to gain depth of field, but what about geometry? > I don't see how you could do architecture via stitching. > Another thing, in order to get correct geometric > projection, wouldn't you need to mount the camera > such that the panning axis is at the nodal point > of the lens instead of the usual tripod mount which > is further back near the focal plane?
