Not sure where you see think the Mirrorball Closeup is wrong. When cropped right at the 180 deg circle, it fits the bill just fine.
A free alternative is using Hugin: http://hugin.sourceforge.net Also, there's the Photoshop Plugin Flexify2 (which I prefer for workflow reasons): http://www.flamingpear.com/flexify.html There's a tutorial on all three methods in my book, pages 282ff. Can get it on www.hdri-handbook.com or on SafariBooks. Best, Christian On Dec 8, 2009, at 12:04 AM, Claus B. Madsen wrote: > > > Dear list members, > > I use HDRShop to convert between mappings for environment maps, e.g., from > mirror ball to lat-long, etc. > > I wish to re-map an image taken with a Sigma 8mm 180 degree field-of-view > fish eye lens. I have taken high-res images > of the sky with the lens pointing straight up and wish to convert these > images to lat-long mapping (with 180 degree field-of-view this will give me > data for the upper half of the 360x180 degree long-lat map) > > So far I have used the 'mirrorball closeup' option in HDRShop when > converting, but I have now made several experiments and measurements which > show that interpreting the fish-eye-lens image as "mirrorball closeup" is > incorrect. In fact the fish-eye-lens image seems to be identical to the > hemispherical mapping used by RADIANCE when rendering with the -vth option. > > I am searching for a piece of software which can convert from (cropped) > fish-eye-lens image to mirrorball closeup (or directly to lat-long). Perhaps > a plugin for HDRShop? > > Best, > Claus > > > > Sincerely, > Claus > <cbm.vcf>_______________________________________________ > HDRI mailing list > [email protected] > http://www.radiance-online.org/mailman/listinfo/hdri _______________________________________________ HDRI mailing list [email protected] http://www.radiance-online.org/mailman/listinfo/hdri
