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Old 06-28-2008   #1 (permalink)
loraksus
Vicuna
 
Posts: 116
loraksus has a spectacular aura about
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Default Trying to correct for distortion in a large image

I have this panorama I'm currently editing. I've been messing around, trying to get it to "straighten" for a while now, but can't seem to get it right. I'm not sure if it's the terrain or it was introduced during the merging process or... It seems like the angle changes near the right hand side too (or is that just the peninsula appearing to magnify the effect?)
I don't think it was a screwed up tripod (since it isn't "drooping").
It originally was a ~240 degree panorama (I cropped out the right hand side since it was... not much except for dark trees), so that may be a cause of it.

Figure I'd have a breather, toss it up here and have someone else take a look at it.
Is the distortion even annoying enough to merit correction?
Any recommendations on an app / fix? The Photoshop filter I'm using hasn't been giving me any good results.

"Thumbnail"
http://vehiclehitech.com/pictures/!%...0rev1%2012.jpg

A bit bigger (about 3.7mb)
http://vehiclehitech.com/pictures/!%20Photography/Panorama/Stanley%20Park%20rev1%2033.jpg

Doesn't help that the original is 35,000 pixels wide either. Photoshop runs a bit slow with large files

BTW.. this is Stanley Park in Vancouver at 3AM, 12 30 sec exposures f/8, ISO 100, Canon XTI.
Don't recall what lens it was... Either the "EF 28-135 f/3.5-f/5.6 non IS" or the EF 50mm f/1.8 prime. Some fairly bad flare issues, so I think it was probably the 28-135

Thanks in advance

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