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Thread started 13 Jun 2011 (Monday) 21:46
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Barrel Distortion :( -- PS Help Please!

 
DLitton
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Jun 13, 2011 21:46 |  #1

Hello, heres the photo i am talking about. I stitched this together, and have a slight barrel distortion in the shot, and a few other minor things. I am a noob at any editing, and really would like to fix it if possible??? I was wondering if anyone knew how?

IMAGE: http://farm4.static.flickr.com/3579/5823567006_61997e536d_b.jpg

Thanks again in advance for the help from y'all. This forum is the best bunch of photographers around!

David

  
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jerr6
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Jun 13, 2011 22:08 |  #2

you can try in photoshop filters--> distort-->lens correction.


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Snydremark
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Jun 13, 2011 22:16 |  #3

I love PTLens (external link) for these sorts of things. Free to try and only $15 to buy if you like it; one of the best tools I've picked up yet.


- Eric S.: My Birds/Wildlife (external link) (R5, RF 800 f/11, Canon 16-35 F/4 MkII, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
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DLitton
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Jun 13, 2011 23:08 |  #4

that ptlens sounds cool. downloaded it but dont have time to try it tonight


David

  
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THE ­ TROOPER
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Jun 14, 2011 02:28 |  #5

+1 for PTlens


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frenchconnector
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Jun 14, 2011 04:13 |  #6

I doesnt look like barrel distortion, it looks like different perspective, right part of the image is taken almost straight on and the camera was turned to the left to get the left part.
I think you should be able to fix it with transform>distort in PS.
Since the lines are wrong mostly in one part of the image, auto correction like lens correction filter will not work. Gotta do it by hand.


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tzalman
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Jun 14, 2011 05:24 |  #7

frenchconnector wrote in post #12590142 (external link)
I doesnt look like barrel distortion, it looks like different perspective, right part of the image is taken almost straight on and the camera was turned to the left to get the left part.
I think you should be able to fix it with transform>distort in PS.
Since the lines are wrong mostly in one part of the image, auto correction like lens correction filter will not work. Gotta do it by hand.

+1
The lines are straight, not curved, but are slanted, not up and down, so this is not barrel distortion (a lens defect) but rather perspective distortion caused by the camera not being level and complicated by the fact that it is unlevel at different angles in the two shots. You will need a perspective correction tool in which each corner can be moved independently.


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René ­ Damkot
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Jun 14, 2011 05:34 |  #8

frenchconnector wrote in post #12590142 (external link)
I doesnt look like barrel distortion, it looks like different perspective, right part of the image is taken almost straight on and the camera was turned to the left to get the left part.
I think you should be able to fix it with transform>distort in PS.
Since the lines are wrong mostly in one part of the image, auto correction like lens correction filter will not work. Gotta do it by hand.

Yep.
Another option: Free transform > warp:

IMAGE: https://img.skitch.com/20090627-g9y269r96uss46nudwhjp5r6ji.preview.jpg
IMAGE LINK: https://skitch.com/ren​edamkot/biaqp/photosho​p  (external link) Click for large view (external link)

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Snydremark
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Jun 14, 2011 10:29 |  #9

frenchconnector wrote in post #12590142 (external link)
I doesnt look like barrel distortion, it looks like different perspective, right part of the image is taken almost straight on and the camera was turned to the left to get the left part.
I think you should be able to fix it with transform>distort in PS.
Since the lines are wrong mostly in one part of the image, auto correction like lens correction filter will not work. Gotta do it by hand.

It looks like there's a bit of both going on; using the barrel distortion correction in PTLens straightens things out a bit through the center of the frame, but there's still a bit of an upturn at the edges from the perspective change.


- Eric S.: My Birds/Wildlife (external link) (R5, RF 800 f/11, Canon 16-35 F/4 MkII, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
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tkerr
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Jun 14, 2011 11:30 |  #10

What software do you have now?


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F1, try it you'll like it.

  
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DLitton
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Jun 14, 2011 16:36 |  #11

Photoshop Elements 9. Ill post the updated in a sec, let me try and get it on a site to share it with.


David

  
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DLitton
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Jun 14, 2011 16:52 |  #12

Okay... Here is the OLD shot:

IMAGE: http://farm4.static.flickr.com/3579/5823567006_61997e536d_b.jpg

Here is the NEW shot with my attempt at fixing it, I think it looks less distorted? I feel like I fixed the distortion in the middle of the shot, and decreased the amount on the left... but I think this one looks a ton better?:

IMAGE: http://farm4.static.flickr.com/3518/5834230900_2f2c168579_b.jpg

David

  
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René ­ Damkot
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Jun 15, 2011 05:53 |  #13

Still some keystoning, mainly on the left side. Either free transform or lens correction should fix that.
For the rest: Pretty good, but it looks like the clock tower got a bit lower (and, as a result, the clock face is no longer a circle)


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DLitton
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Jun 15, 2011 11:00 |  #14

Yeah I need to see about somehow fixing that. I am still learning. :)


David

  
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Barrel Distortion :( -- PS Help Please!
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