How to assemble with Canon 6D fullframe and Canon 8-15mm fisheye?

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Thread: How to assemble with Canon 6D fullframe and Canon 8-15mm fisheye?

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  1. How to assemble with Canon 6D fullframe and Canon 8-15mm fisheye?

    #1

    I bought the Canon 8-15mm. It is nice.
    I have a NN3 and I would like know which way is the best way to get the shots in the box?

    I read http://michel.thoby.free.fr/Canon_8-...oParallaxPoint

    Canon 8-15 mm @ 8 mm with 3 Horizontal is out of the question because of reduced resolution.

    But which on of these should I use:
    Canon 8-15 mm @ 12 mm with 4 Horizontal and a nadir
    Canon 8-15 mm @ 15 mm with Nadir + 4 Horizontal + Zenith
    Canon 8-15 mm @ 15 mm with Nadir + 6 Horizontal + Zenith

    I want to play "safe" with minimun stitching errors and a good resolution. The amount of pictures is not so much an issue.

    Why do a lot of you choose 12mm with this lens?

    Best regards
    Jesper
  2. #2
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,364

    12mm is good for single row spherical. You can tilt up by 5-10 deg and you can close the zenith.
    Are you sure 4 horizontal is enough at 15mm? You need good overlap.

    Nick



    Fanotec
    We listen. We try harder.
  3. #3

    Quote Originally Posted by nick fan View Post
    Are you sure 4 horizontal is enough at 15mm? You need good overlap.
    The HFOV at 15mm is only 91° so the images barely overlap at all.

    John
  4. #4

    So I guess the 12mm focal lenght is chosen because of the resolution vs the black area and to be able to avoid the zenith shot?

    Still - all the shots @ 15mm will get a better resolution - right?

    Jesper
  5. #5
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,364

    Quote Originally Posted by jesperfrehr View Post
    So I guess the 12mm focal lenght is chosen because of the resolution vs the black area and to be able to avoid the zenith shot?

    Still - all the shots @ 15mm will get a better resolution - right?

    Jesper
    At 15mm, you get high resolution but requiring 5-6 shots around+ Z/ N.
    you trade resolution with speed

    nick



    Fanotec
    We listen. We try harder.
  6. #6

    Approximate 360x180 equirectangular panorama image sizes for the 8-15mm fisheye on a 6D:

    @8mm: 6950x3475
    @12mm: 10600x5300
    @15mm: 14440x7220

    John
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