NPP for Samyang 8mm Canon

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  1. NPP for Samyang 8mm Canon

    #1

    Hi,

    Is there any known NPP position for the Samyang 8 mm Canon ?


    Julien
  2. #2
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,365

    what is the pano head model? Is the lens version 1 or 2?

    Nick



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  3. #3
    Users Country Flag
    Join Date: Aug 2008
    Location: Netherlands
    Posts: 1,733

    What camera body do you use?

    Heinz
  4. #4

    I have a Canon EOS 7D.
    The Lens is the version 1 (what is the difference with the version 2 ?)
    And the head is the R1
  5. #5

    As there is only one NPP adjustment possible with the R1, it is easy to set up, and shouldn't take more than ten minutes or so. See http://www.johnhpanos.com/epcalib.htm. I hope you appreciate that the R1 is not ideal for shooting full 360x180 spherical panoramas, given that you cannot rotate the camera up and down to shoot the zenith and nadir while maintaining the NPP position. You can still get good results outdoors at least by making compensating adjustments of the tripod position and using the zenith/nadir adapter.

    John
  6. #6
    Users Country Flag
    Join Date: Aug 2008
    Location: Netherlands
    Posts: 1,733

    Hi Julien,

    http://wiki.panotools.org/Entrance_Pupil_Database

    URS = Upper rail setting is added by L1 + L2. 37,5mm + 50mm = 87.5 This is for normal panoheads.

    For the R1 you have to use John's link to find the NPP.

    In case you like to shoot Zenith and Nadir in NPP, you could get the RS-1. It is the next small head in size to be used on tripod and on pole.

    Heinz
    Last edited by hindenhaag; 09-01-2013 at 06:22 AM.
  7. #7

    Quote Originally Posted by John Houghton View Post
    As there is only one NPP adjustment possible with the R1, it is easy to set up, and shouldn't take more than ten minutes or so. See http://www.johnhpanos.com/epcalib.htm.
    Yes, I know this page. But despite the fact that the adjustment is good, I doesn't get good stitching. I will try again, maybe I missed something. Any suggestion ?

    Quote Originally Posted by John Houghton View Post
    I hope you appreciate that the R1 is not ideal for shooting full 360x180 spherical panoramas
    I don't understand. The R1 is sold on Nodal Ninja website as ideal for 360x180 spherical with fisheye lens
  8. #8

    Many beginners don't get good stitching despite the panohead being set up perfectly adequately. It's impossible to say where your problems lie without seeing some evidence. Can you make available a set of camera images so that they can be investigated? Jpeg copies (half size would be ok for convenience if you prefer) uploaded somewhere - e.g. a free file sharing site like http://ge.tt/.

    The R1 being a single row head is fine for 360x180 when used with a fisheye lens that has a 180 degree vertical fov when mounted on your camera. The Samyang 8mm is a fullframe fisheye with a 180 degree diagonal fov. (It's really a 9mm fullframe fisheye lens). It's possible to achieve a 180 degree vertical fov by mounting the camera rotated to bring the diagonal of the frame more-or-less vertical. A large angle of tilt upwards is also required, which leaves a large awkwardly shaped hole at the nadir to be filled. Try that by all means.

    John
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