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Re: Mental ray fisheye lens shader

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  • Matthew
    Hi all, The MR fisheye for Max was created from Daniel Ott s Maya shader. You can visit his site here http://www.thedott.net/shaders/domeAFL/index.html We had
    Message 1 of 16 , Mar 22, 2007
      Hi all,

      The MR fisheye for Max was created from Daniel Ott's Maya shader.
      You can visit his site here
      http://www.thedott.net/shaders/domeAFL/index.html

      We had an older XSI shader built from his code floating around
      somewhere, I'll try to dig it up. It was for an older version of XSI
      so it may need to be updated. Daniel supplies all the source
      materials, so if someone really needs the XSI shader, it could be
      compiled easily, and I know for a fact that the Max/Maya/XSI render
      all match up.

      As for our Max version, I have not tested it on a 64 bit system. I'm
      not sure if any changes would be necessary to have the shader run
      under a 64 bit version of Max.

      Ryan, as for the videos, I use camtasia studio to do screen grab
      video, and you may need the techsmith codec to play it. It should
      run under pretty much under any browser. If not, I can upload a
      different version in Quicktime format.

      As for tilt and rendering... At Adler we produce 180 degree fisheyes
      at a 15 degree tilt. Due to limited time, render nodes, and budget,
      we don't over render (though I'd like to). I haven't used a multi-
      camera rig for a few years now. Ever since we started to use Vray
      for Max, fisheye rendering is the only way to go (IMO).

      Matthew
    • Don Davis
      ... I rendered what may have been the first multi camera derived fulldome animations in 1998, and I still find that method far faster than trying to render a
      Message 2 of 16 , Mar 22, 2007
        >Ryan, re the stitching vs raytraced camera debate I have to say that I
        >would go with the latter 99% of the time. With the rendering power
        >available today and the sophistication of the various rendering packages
        >I'd say that in pretty much every area, workflow, quality and speed that
        >multi camera renders and stitching are a thing of the past.

        I rendered what may have been the first multi camera derived
        fulldome animations in 1998, and I still find that method far faster
        than trying to render a 4K fisheye view. This method is far from
        extinct, at least in my workshop.

        Don
      • Hue Walker Bumgarner-Kirby
        I tried to set up the fisheye shader in my system (windows xp, Maya 8.0) and I can t get it to render properly (I get a black frame)... with both the atom and
        Message 3 of 16 , Mar 22, 2007
          I tried to set up the fisheye shader in my system (windows xp, Maya
          8.0) and I can't get it to render properly (I get a black frame)...
          with both the atom and the ott versions...

          so I'm assuming either it doesn't work with Maya 8 or (more likely) I
          have misunderstood something in the directions for set up...

          anybody here using either atom or ott fisheye with Maya 8, and willing
          to help me troubleshoot?

          --
          Hue Walker Bumgarner-Kirby
          Multi Media Development Specialist
          ARTS Lab
          University of New Mexico

          http://huewalker.blogspot.com/
        • maldred1234
          FinalRender, fisheye 180-200. If it was a dream of going back to 5 cameras and stitching, I d wake up in a cold sweat. It was ok for 1k and useable for 2k. But
          Message 4 of 16 , Mar 22, 2007
            FinalRender, fisheye 180-200. If it was a dream of going back to 5
            cameras and stitching, I'd wake up in a cold sweat. It was ok for 1k
            and useable for 2k. But 4k would add so much time to the process I
            fear to think. With the 5 camera setup it was useful to have an extra
            45 degree tilt to play with. Then again, if you know what you want or
            you don't plan to adjust tilt for every dome, that extra rendering
            time is very wasteful.

            Mark
          • Tom Casey
            ... One little trick for all you out there rendering separate cameras and stitching is (assuming you do not want the bottom half of the lower cameras for tilt
            Message 5 of 16 , Mar 23, 2007
              On Mar 23, 2007, at 1:36 AM, maldred1234 wrote:

              > FinalRender, fisheye 180-200. If it was a dream of going back to 5
              > cameras and stitching, I'd wake up in a cold sweat. It was ok for 1k
              > and useable for 2k. But 4k would add so much time to the process I
              > fear to think. With the 5 camera setup it was useful to have an extra
              > 45 degree tilt to play with. Then again, if you know what you want or
              > you don't plan to adjust tilt for every dome, that extra rendering
              > time is very wasteful.

              One little trick for all you out there rendering separate cameras and
              stitching is (assuming you do not want the bottom half of the lower
              cameras for tilt options) is to place a black plane near the cameras
              blocking out the lower half of the scene. Depending on what software
              you're using, applying a "simple" shader to that surface (one that
              has no shading qualities and renders quick) will save a lot of render
              time.

              Tom

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            • gregoryallandowning
              I am having the same problem w/ maya 8 and xp-64. I am thinking this may be a Maya version issue. I had the same problem using
              Message 6 of 16 , Mar 23, 2007
                I am having the same problem w/ maya 8 and xp-64. I am thinking this
                may be a Maya version issue. I had the same problem using
                http://www.lightengine3d.com/index2.html MR fisheye lens shader. I am
                not familiar w/ atom, is this another fisheye lens shader?

                Hue Walker Bumgarner-Kirby wrote:

                > I tried to set up the fisheye shader in my system (windows xp, Maya
                > 8.0) and I can't get it to render properly (I get a black frame)...
                > with both the atom and the ott versions...
              • Hue Walker Bumgarner-Kirby
                sorry... missed this one... I was referring to atomlabs www.atomlabs.org/asdn pretty much the same thing as D.Ott s lenses... and I can t make them work with
                Message 7 of 16 , Apr 2, 2007
                  sorry... missed this one...

                  I was referring to atomlabs

                  www.atomlabs.org/asdn

                  pretty much the same thing as D.Ott's lenses...

                  and I can't make them work with Maya 8.0 either....

                  --
                  Hue Walker Bumgarner-Kirby
                  Multi Media Development Specialist
                  ARTS Lab
                  University of New Mexico

                  http://huewalker.blogspot.com/
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