PanoTools NG:
How many shots for a 360x180 with the Sigma 8mm?
sheldonison 2007-Mar-13 16:37:19
How many shots are required for a 360x180 panorama with the Sigma 8mm?
I see 360x180 panoramas by Roger Berry, apparantly taken with only
four photos using the Sigma 8mm. Also, I find that having a very
accurate NPP is important to stitching my panoramas; and yet Roger
shoots with a monopod (or a pole), resting on his toe, while sitting
on a camel, apparently without even using a level to keep the NPP
constant. Does this take a lot of post processing, to correct for
NPP errors, and to fill in the zenith and the nadir? How difficult is
it to get a 360x180 with the sigma 8mm w/out a nadir/zenith shot?
For reference, I have a pentax 10-17mm fisheye, and for my 360x180
panoramas, I shoot 6/1/1. Here are my first two 360x180 panoramas
with the nadir patched, from Austin, TX. My methodology takes a lot
of manual work to get the control points to line up for the nadir. I
defish the nadir, and then manually generate control points between
the nadir and the six other images. Then I have ptgui optimize the
defished nadir as a rectalinear imasge with FOV and shift parameters,
and finally I reoptimize everything.
- Shel
http://www.sheltx.com/share_stuff/PANP1764.html
http://www.sheltx.com/share_stuff/PANP1776.html
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