How do you correct barrel distortion in post processing?

[kingdaddy]

I have the EF-S 10-22 and I read somewhere that PS or PSE could automatically correct the barrel distortion, does anyone know how to do this.

[jra]

Go under "Filter, Distort and Lens Correction". From there, you can make adjustments to the photo to correct distortion.

[SkipD]

I have the EF-S 10-22 and I read somewhere that PS or PSE could automatically correct the barrel distortion, does anyone know how to do this. Are you really talking about barrel distortion (the opposite of pincushion distortion - both true distortion types caused by lens optics) or are you talking about the so-called "wide-angle" distortion that is caused by being very close you your subject with a short focal length lens? There are some very significant differences.

[kingdaddy]

Are you really talking about barrel distortion (the opposite of pincushion distortion - both true distortion types caused by lens optics) or are you talking about the so-called "wide-angle" distortion that is caused by being very close you your subject with a short focal length lens? There are some very significant differences.

I guess I'm talking about Wide Angle distortion, people look fat if there at the edge of the photo.

[toxic]

I guess I'm talking about Wide Angle distortion, people look fat if there at the edge of the photo.

move farther away, and/or don't use anything less than 20mm.

[S.Horton]

I'm not sure they cover what you have, but look at http://www.dxo.com

[kingdaddy]

I know I read somewhere that either Canon supplied software or PS had the ability to automatically correct for that and that it would even detect what lense you used so the correction would match.

[SkipD]

I know I read somewhere that either Canon supplied software or PS had the ability to automatically correct for that and that it would even detect what lense you used so the correction would match.You really do need to read this "sticky" thread - a tutorial on perspective control (http://photography-on-the.net/forum/showthread.php?t=672913). It will do wonders for your knowledge.

By the way, there's no reason to waste an extra "e" on the word lens :p.

[kingdaddy]

Never mind, found this http://www.kenrockwell.com/tech/perspective.htm works very well.

BTW good article on Perspective, thanks.

[ImRaptor]

By the way, there's no reason to waste an extra "e" on the word lens :p.

But spelling it "lens" in some countries would be like me spelling "color" rather than"colour" here, just flat out incorrect.

So really, it's not waste if its spelling it correctly.
And I'd rather see a waste of letters than the nonsense of seeing people use things like "u" and "ur" as complete words.

[Two]

I see many images taken with a 10-22 in which everything in the frame is
squared up. Unlike the distortion I get with my 16-35 at 16mm. And here's
an example of the distortion I'm talking about http://www.pbase.com/two/image/111145793

So, is everyone using wide angles removing this 'distortion' in PP before posting? And is there such a thing as a wide angle that doesn't 'distort' a photo in the above manner?

[SkipD]

But spelling it "lens" in some countries would be like me spelling "color" rather than"colour" here, just flat out incorrect.There are words which are spelled differently in different regions, even though English is the common language. However, I have not found any place where "lense" is the preferred spelling.

I do believe "lense" came into being by folks taking only the "s" off the plural form "lenses". When something like that happens enough, folks begin to accept the mis-spelling.

I think, however, we should encourage folks to spell the word "lens" here on the forum the same way all the lens manufacturers in the world spell it. ;)

[toxic]

But spelling it "lens" in some countries would be like me spelling "color" rather than"colour" here, just flat out incorrect.

So really, it's not waste if its spelling it correctly.

there is no such word as "lense". Or "aperature", for that matter.

anyways, it seems the OP has found the solution.

[number six]

I see many images taken with a 10-22 in which everything in the frame is
squared up. Unlike the distortion I get with my 16-35 at 16mm. And here's
an example of the distortion I'm talking about http://www.pbase.com/two/image/111145793

So, is everyone using wide angles removing this 'distortion' in PP before posting? And is there such a thing as a wide angle that doesn't 'distort' a photo in the above manner?

That's not distortion, it's simply geometry. Nothing to do with the lens, actually. Your ultrawide lens just sees a wider angle so the geometric effect of being off-center is more obvious.

-js

[ImRaptor]

there is no such word as "lense". Or "aperature", for that matter.

anyways, it seems the OP has found the solution.

Well, according to Merriam-Webster "lense" is in fact a word. A direct variant of the word "lens".

"aperature" however, is an incorrect spelling.

English is an interesting language. A word does not have to be a common spelling, or even origianlly a correct spelling, but it can become such. "Do'h" (or variant "doh") is a good example. Years ago it was really a sound, not a word. Now, it's qualified as a word due to the extended use of said word.

SkipD is correct on the lines of a common enough mispelling becomes accepted, American English is a good example of that.
Comonality aside, and dialects ignored, an uncommon spelling of a word is not any less of a word.