iwatkins
Posts: 4
Location:
Registered: 7 May 2008
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How do I fix distortion in 100 degree view.
Posted: 7 May 2008 at 19:19 GMT
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I'm trying to create images for a company that wants large shots of their rooms. I'm keeping the FOV to 100 degrees or less but I'm still getting distortion in some places. For example... the clock and stool in the lower left.
How can I eliminate this distortion so that everything looks relatively normal?
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John Houghton
Posts: 2011
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: How do I fix distortion in 100 degree view.
Posted: 7 May 2008 at 20:43 GMT
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This question comes up quite regularly. The "distortion" is just a false perspective effect arising from the fact that you are viewing the image from too far away. If you position your eye closer such that the angle of the view measured at the eye is 100 degrees, then the perspective looks normal - at least while your eye points directly ahead. The image is a geometrically correct rendering with no distortion and as such doesn't need correcting. Anyway, I don't think the clock looks seriously distorted. Not when you compare it to some of Salvador Dali's!
John
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Hans Nyberg
Posts: 598
Location: Denmark
Registered: 28 Aug 2005
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Re: How do I fix distortion in 100 degree view.
Posted: 7 May 2008 at 21:07 GMT
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Unfortunatelly this kind of things happen at 100 degrees.
You know there is a reason why the classic architectural camera Hasselblad Superwide only has 70x70 degrees.
But of course today you can cheat almost everything and create a different perspective for a small part of the image.
Like this
Simple operation in Photoshop.
Copy a selection with the clock .
Paste into a new layer.
Choose Transform/warp
Change the perspective and flatten the image.
30 sec operation.
Hans
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