Adding a nadir cap (mirror ball)
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I wrote a Photoshop action that produces these mirror spheres below out from
an equirectangular panorama. As you can see are three sizes available.
Small covers 5% ,Big 8% and XXL 12% of panorama height (equirectangular projection)
Below you can see the region that will be covered with the mirrorball.
Here the action set in Photoshop:
Download the Photoshop action here:
Cap.atn
For a flexible nadir cap which can be streched to your needs:
CapFlex.atn
Don't know how to install a Photoshop action?
Take a look at How to install actions in Photoshop
Worklflow
1.) Open equirectangular / psphere image in Photoshop
2.) Run desired action (small / big / xxl))
3.) Save as....
4.) Finished
Peter Nyfeler (Pitdavos)