PanoTools NG:
Re: How many shots for a 360x180 with the Sigma 8mm?
mshakeshaft 2007-Mar-13 21:02:23
Most of the shots here:
http://www.martinshakeshaft.com/wp-content/burleigh/01outside.html
Were taken with a Sigma 8mm with four shots - then the nadar was
repaired using PTEditor I have posted a tutorial here:
http://www.docphot.org/?p=40
Taken on a Canon 20D and a Sigma f4
Hope this helps
Martin
--- 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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