On Wed, 31 May 2006, Francois Lord wrote:
Ahh... so this fisheye does not produce a true 180 degrees circular image.
It's still cool, thoughh.
I agree with Kim that camera manufacturers tend to make betters lenses, but
the Sigma 8mm fisheye is the only one I know that gives a circular image.
Then again, having a Canon 5D with the Sigma 8mm is an expansive proposition
considering that a small christmas ball (3$ for 16) and a small
point-and-shoot camera with manual controls can do 90% of the job.
I would almost venture to say it does more than 90%. With the chrome ball
you have very little seaming to do. With the fisheye (a REAL fisheye) you
still have to have a seam. The fisheye doesn't do much more than 180deg.
The chrome ball, with the two shot method as described in the HDRShop docs
(I posted the link) covers a FULL 360. It has no seams. You only have to
clone two places, and have a lot more liberty about where to make the edge
of the clone. It can be an amorphous shape, instaed of a blended line.
Again, if all you need is IBL you could shoot it with a disc camera (well,
you would need to make that HDR ;-). The point is that the resolution is
unimportant for the lighting, only if you need sharp reflections.
--
Joe Laffey | Visual Effects for Film and Video
LAFFEY Computer Imaging | -------------------------------------
St. Louis, MO | Show Reel http://LAFFEY.tv/?e01276
USA | -------------------------------------
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