Re: Re: Strip assembly panoramas with a digital slr -- for stereo etc

> Here is an anaglyph version of the finished panorama of the cave.
> http://www.mediavr.com/cerberusanaglyph.htm
> The camera separation I used with this scene is a bit large for
> anaglyph.
>
> Peter Murphy
> http://www.mediavr.com/blog
>
>
> --- In PanoToolsNG@..., "panovrx" <mediavr@...> wrote:
>
>>http://www.mediavr.com/cerberusr.htm
>>
>>This is a (unretouched) spherical pano of a cave but not stitched
>
> in
>
>>the usual way ie. blended images -- it is assembled in a few
>
> seconds
>
>>out of 120 (3 degree) very narrow vertical images strips with no
>>blending at all  -- using the mosaic tool of the excellent
>>Stereophoto Maker.
>>
>>It is the right shot of a stereo pair. It is the middle exposure of
>>bracketed sequences. I havent enfused the other exposure panos with
>>it yet.
>>It was shot with a very accurate 120 step indexing head I made from
>
> a
>
>>large gear with a strip of brass clicking into the teeth
>>
>>The camera here is to the right of the zero parallax point as it
>>rotates by about 7 cms but still because the steps are so small
>>perspective jumps are mostly invisible and the light (surprisingly
>>one might think) seems constant across the joins.
>>
>>Each strip is a 3 by 180 degree equirectangular strip from a
>
> 5D/Nikkor
>
>>fisheye -- generated very quickly in PTGui or via a script with the
>>Panotools plugin.
>>
>>Why would you want to make panoramas this way --
>>
>>-- well you can totally automate the stitching process -- it is
>
> more
>
>>forgiving of slight positioning errors than standard template
>>stitching (here with stereo panoramas the mispositioning is extreme
>>compared with standard stitching practice  - yet still it stitches
>
> ok
>
>>automatically)
>>-- though you must be careful with the constancy of the alignment
>
> of
>
>>the camera tilt and roll with the rotation axis -- I use a digital
>>level to check)
>>
>>.. it is good for stereo panoramas using either the two cameras (or
>>one camera with shift) or single camera/single rotation methods
>>
>>.. it is good for scene contrast as you can put a custom lens hood
>
> on
>
>>the lens to give a narrow strip view of the scene ... and hence is
>>good for hdr panoramas too.
>>
>>Peter Murphy
>>http://www.mediavr.com/blog
>>
>
>
>
>