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Re: Samyang 8mm: FOV?

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  • Darren
    ... Right, that is a good article. Samyang is apparently unique in that it is very close to a Stereographic projection, which is supposed to be desirable
    Message 1 of 5 , Jul 27, 2010
      --- In PanoToolsNG@yahoogroups.com, Erik Krause <erik.krause@...> wrote:
      >
      > Am 24.07.2010 20:10, schrieb Darren:
      >
      > > The Samyang literature indicates that on a Canon DSLR, the 8mm lens
      > > has a 167˚ angle of view (I assume that this means 'diagonal'):
      >
      > The Samyang is a bit complicated because it doesn't follow the standard
      > fisheye mapping. The very same lens is sold under different names and
      > attributed with focal lengths from 6.3mm to 8mm. Likewise for the FoV
      > (for the diameter of the image circle) different values are given. For
      > details read
      > http://michel.thoby.free.fr/SAMYANG/Early%20test%20report.html
      >
      > Due to the unusual mapping the image circle is larger (and the usable
      > FoV on an APS-C sensor smaller) than a normal 8mm fisheye (in fact it's
      > almost as large as a 10.5mm fisheye). Examples are given on Michel
      > Thobys page.
      >
      > --
      > Erik Krause
      > http://www.erik-krause.de
      >

      Right, that is a good article. Samyang is apparently unique in that it is very close to a 'Stereographic' projection, which is supposed to be desirable for panos :)
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