On 2011-01-03 7:31 AM, dmg wrote:
thinking aloud, the fact that the field of view changes when the image
is in landscape mode might have interesting repercussions during
optimization.
I wonder if a better solution would be to scale with respect to the
corner of the frame.
-dmg
This was being discussed on the PanotoolsNG list
http://panotoolsng.586017.n4.nabble.com/What-is-the-actual-Field-of-View-tt3175092.html
Some lenses eg. the 10.5mm Nikkor on full frame can give you a good stitch
with a fairly wide range of fov because of the magnification effects of a, b
and c eg. from 190 to 200. So I usually force the optimizer to accept a fov of
196 and an a of -0.16 until towards the end of the optimisation process. Only
after I iterate point pair elimination and get the error average down to 3 or 4
pixels do I start to optimise fov and a, b and c generally. But for many
purposes a wide fov range of values might look ok with that lens.
PeterM
--
Jim Watters
http://photocreations.ca
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