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Here's a bit of twisting that I did with a recent panorama taken with the swinglens Noblex camera.
The first image is as shot, notice the pronounced barrel distortion which is a characteristic of all swinglens images.

I decided to make the image look more normal, so I ran it through the Photoshop plug-in: Panorama Tools, and set it to unwarp the image. I also did a slight amount of fixing of the tilt. This is a great tool not just for panoramas, but other types of distortions, and it is free.

There is still some keystoning distortion which I didn't correct in the prior step (but I could have if I had wanted to do a bit of trial and error). So I applied some perspective correction to the image in Photoshop.

Here's the final image with some added cropping.

The image looks "normal". As far as I'm concerned this is all legitimate. I'm just correcting for image distortion. Before the digital era we used to do similar things by tilting the easel when making enlargements, but the warps were beyond our capabilities.

I sometimes prefer the original look, just because it is different, and sometimes I go for the conventional one. It's nice to be able to have the choice. I've go some other examples in the tips section of my web site, with more detailed explanations.

Policies not Politics
---- Daily Landscape

by rdf (robert.feinman@gmail.com) on Fri Mar 14th, 2008 at 01:16:21 PM EST
Interesting. I have some Noblex shots that a friend took during a mountain climbing misadventure. I don't recall them being so distorted.  Yeah, I just dug them out. The panarama prints measure 14x5.5 inches and I don't see such large distortion as you experienced.  Maybe because the targets (mostly mountains) were more distant.

I can swear there ain't no heaven but I pray there ain't no hell. _ Blood Sweat & Tears
by Gringo (stargazing camel at aoldotcom) on Fri Mar 14th, 2008 at 06:16:51 PM EST
[ Parent ]
The eye is very forgiving when there are no obvious straight lines. As long as the horizon is in the middle of the frame most landscapes look fine.

I have lots of other examples of Noblex (and stitched 35mm panoramas) on my main web site. A few are even 360 degree interactive.

There are also a bunch of photographic techniques in the tips section.

http://robertdfeinman.com

Policies not Politics
---- Daily Landscape

by rdf (robert.feinman@gmail.com) on Fri Mar 14th, 2008 at 07:55:12 PM EST
[ Parent ]
Great web gallery! Love the opening Maui Plantation shot. I'll have to go back and look at the tips section. A dog that's too old to learn is a dead dog.

I can swear there ain't no heaven but I pray there ain't no hell. _ Blood Sweat & Tears
by Gringo (stargazing camel at aoldotcom) on Fri Mar 14th, 2008 at 08:33:46 PM EST
[ Parent ]

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