PanoTools NG:
Re: How many shots for a 360x180 with the Sigma 8mm?
Roger Berry 2007-Mar-14 08:01:04
Here's a pano 4 shots with Sigma 8mm that I have not worked on yet,
as you can see there are some errors in all 4 directions, but all
very easy to fix. As for that tractor, there's sand all around it so
it's very easy to remove and I don't want to see it anyway. What
will take longer it removing the power lines in front of the trees
and some of the poles.
http://www.camelphotos.com/india2/pushkar_overview.html
Roger Berry
--- In #removed#, "sheldonison" <shel@...> wrote:
>
> 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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