atomicmak
Posts: 173
Location: ahmedabad, India
Registered: 7 Dec 2006
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how to shoot cylindrical panorama?
Posted: 4 Apr 2008 at 4:45 GMT
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Wanted to know what is the perfect method of shooting cylindrical panorama ?
what are the outupt specification like fov viewer dimension etc so that it dont look so much distorted ?
I have
Nikon d200
18x70 nikkor ED
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TriggerHappY
Posts: 601
Location: vancouver, Canada
Registered: 21 Jul 2004
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Re: how to shoot cylindrical panorama?
Posted: 4 Apr 2008 at 5:28 GMT
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Just to give you the heads up, but there is a bug displaying cylindrical pans full screen in Quicktime. Your file will look like horrible. What size do you wish to display your pans and what lens are you using.
Have fun
Dylan
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puzz
Posts: 12
Location: Poreč, Croatia
Registered: 22 May 2007
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Re: how to shoot cylindrical panorama?
Posted: 4 Apr 2008 at 5:35 GMT
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I suppose your question is about equirectangular panoramic images without a (java/qt/flash) viewer?
If it is a very wide panorama (for example a full 360-degree cylindric) -- the only way is make sure your vertical size (height) is small compared to width.
If your panorama is not that wide (in terms of angle-degrees) -- maybe this thread can help you: www.panoguide.com/forums/qna/4634/
puzz
www.panoye.com
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atomicmak
Posts: 173
Location: ahmedabad, India
Registered: 7 Dec 2006
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Re: how to shoot cylindrical panorama?
Posted: 4 Apr 2008 at 7:02 GMT
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hi guys,
i am familiar with the equi's very well.
i am planning to shot cylindrical with still lense 18x70 on 18mm portrait mode.
and for that i want to have some expert's advice on
1. what fov i should choose for output.
2. what player dimension i should choose so that it dosent give any distorted view to customer ?
this is pure cylindrical no equi or full spherical.
hope this gives better idea what i am looking for is !!
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Hans Nyberg
Posts: 824
Location: Denmark
Registered: 28 Aug 2005
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Re: how to shoot cylindrical panorama?
Posted: 4 Apr 2008 at 9:47 GMT
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With an 18mm you have a vertical FOV of 66.
I assume you are using it on a 1,5 sensor
The best is to use the max zoom for default.
66 vertical FOV can be seeen also on widescreen without distortion.
The problem which Triggerhappy refers to is not a general problem.
It is an old problem in Windows QTVR which may happen on some movies if you display them in a very wide aspect.
I have a lot of cylindric movies at panoramas.dk especially from 2002 and 2003 and the problem is not at all general. What happens is that you get large bandings when you display them in proportions like 1 to 2 or larger.
I have just tested in Windows and among 7 cylindric movies only one had the problem. And when I changed the proportions to normal aspect of a standard screen like 800x600 it dissapeard.
I suspect that it is caused by using to few tiles also but even if we did a lot of tests on it back in 2003 we could not find a general cause to the problem except for th large aspect ratio.
You can also avoid it by making a cubic movie and just restrict the view.
Hans
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TriggerHappY
Posts: 601
Location: vancouver, Canada
Registered: 21 Jul 2004
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Re: how to shoot cylindrical panorama?
Posted: 5 Apr 2008 at 5:14 GMT
updated: 5 Apr 2008 at 5:18 GMT
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Hiya Hans, I think the problem is also exasperated by vista and new'ish quicktime, nvidia video cards may also cause vista grief. I experimented with tile sizes etc etc in order to find a solution before to no avail. I have found it was only affecting the folks with wide screen aspect LCD monitors. They used to cost a bundle but now you can buy a 24 inch wide lcd for around $300, everyone is getting one, and now many of my qtvrs I was once proud of are now garbage.
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