360 with 8mm sigma problem  

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sundust
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Joined: Thu Feb 14, 2013 8:32 am

360 with 8mm sigma problem

by sundust » Thu Apr 03, 2014 8:02 am

Hi there I have a problem with my sigma 8mm lens. it is the first time I used a fisheye.
The onlything I didnt had was a panoramic head.
What ever I do I cant get perfect solution Mostly the lines of ceiling are broken I have uploaded a sample (Source images, images of the Autopano setup and the result) to my web page.

Where did I go wrong. Please help me.

Here is the set up:
Canon 5D MIII
Sigma 8mm fisheye
Tripod with no panoramic head
Autopanogiga 3.0.8

files: http://www.tripodmedya.com/problem.rar

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mediavets
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Location: Isleham, Cambridgeshire, UK.

Re: 360 with 8mm sigma problem

by mediavets » Thu Apr 03, 2014 8:22 am

sundust wrote:Hi there I have a problem with my sigma 8mm lens. it is the first time I used a fisheye.
The onlything I didnt had was a panoramic head.
What ever I do I cant get perfect solution Mostly the lines of ceiling are broken I have uploaded a sample (Source images, images of the Autopano setup and the result) to my web page.

Where did I go wrong. Please help me.

Here is the set up:
Canon 5D MIII
Sigma 8mm fisheye
Tripod with no panoramic head
Autopanogiga 3.0.8

files: http://www.tripodmedya.com/problem.rar


What did you do wrong?:

You didn't use a pano head.

You didn't have the camera/lens set at the NPP; with your camera/lens combination this should be oissble without a proper pano head if shooting just a single row of 3 or 4 images. with a small positive pitch.

You are using APG 3.0.8 and not 3.5.

You are not using the ideal fisheye lens for your camera.

..............

You would do better with a proper pano head and a fullframe (as opposed to a circular) fisheye lens.

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sundust
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Posts: 18
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Re: 360 with 8mm sigma problem

by sundust » Thu Apr 03, 2014 8:32 am

Sorry but what is NPP?

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mediavets
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Location: Isleham, Cambridgeshire, UK.

Re: 360 with 8mm sigma problem

by mediavets » Thu Apr 03, 2014 8:37 am

sundust wrote:Sorry but what is NPP?


No Parallax Point - so that the camera/lens rotates around the entry pupil of the lens.

A proper pano head allows you to set your camera/lens at the NPP for multirow shooting.

If you are just shooting a single row then it should be possible using a simple rail on your tripod which allows fore/aft adjustment of camera/lens.

It is essential for the camera/lnes to be at the NPP whee shooting interiors with fisheye lenses, otherwise you can never achieve a perfect stitch.

http://www.johnhpanos.com/epcalib.htm

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sundust
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Posts: 18
Joined: Thu Feb 14, 2013 8:32 am

Re: 360 with 8mm sigma problem

by sundust » Thu Apr 03, 2014 8:48 am

ok thanks


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