D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

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Thread: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

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  1. D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

    #1

    Hello,

    Does anybody has this equipment combination ? I've got it setup with the Quick Release Clamp and Camera Plate.

    Readings are 76mm lower rail and 79 upper rail.
    I get perfect alignment both vertically and horizontally.
    Trouble is, if i tilt the lens down -15degree, i can see in the lower corner of the lens the edge of the upper rail.

    Any comments, observations and opinions welcome.


    http://www.nodalninja.com/arca_style...ase_clamp.html
  2. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

    #2
    Users Country Flag badders's Avatar
    Join Date: Jan 2009
    Location: East Kilbride, Scotland
    Posts: 349

    Never tried that combo bt I'm presuming thats correct. However are you not able to remove this portion in your stitching software? For example Autodesk Stitcher will automatically remove this n the Smartblend render.



    Badders
  3. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

    #3
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,437

    This is normal.
    Ptgui will remove it automatically.


    NIck



    Fanotec
    We listen. We try harder.
  4. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

    #4

    It is very common for parts of the pano head and tripod to intrude into the view of the camera in some positions. Tilt the camera down by 90 degrees for the nadir and you see rather a lot of hardware. Strictly speaking, PTGui will not automatically take any steps to remove these unwanted parts of the images. They may well get lost in the blending by virtue of the routing of the seams. However, sometimes the unwanted black areas actually get blended in and cause dark smudges. The solution then is to apply alpha channel masks to the input images to mask out the unwanted areas, which PTGui will then ignore. For details on creating alpha channel masks in Photoshop, see http://www.johnhpanos.com/alphatut.htm

    John
  5. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper

    #5

    Hmm Alpha channels. I will have to give this a go when I get the chance.


  6. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper rail

    #6
    Users Country Flag badders's Avatar
    Join Date: Jan 2009
    Location: East Kilbride, Scotland
    Posts: 349

    Check out Autodesk Stitcher 2009. It will remove this automatically. No alpha channels required.



    Badders
  7. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper

    #7

    I have a D700 with a 16mm Nikon fisheye and NN5 with quick release on its way. Nice to see the A and B settings although I'll verify them specific to my lens/body. Those of you with that same setup, do you find that a 60 degree rotation gives enough overlap for 360 degree virtual tours? I'm just starting out with panos so please pardon my ignorance.

  8. Re: D700 + nikon 16mm/f2,8 : Nodal Point on NN5... seeing the edge of the upper

    #8
    Users Country Flag
    Join Date: Apr 2008
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    Quote Originally Posted by ptortora View Post
    I have a D700 with a 16mm Nikon fisheye and NN5 with quick release on its way. Nice to see the A and B settings although I'll verify them specific to my lens/body. Those of you with that same setup, do you find that a 60 degree rotation gives enough overlap for 360 degree virtual tours? I'm just starting out with panos so please pardon my ignorance.

    for 16mm fisheye on D700, take 6 shots around, zenith and nadir shots.


    Nick



    Fanotec
    We listen. We try harder.
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