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UER Forum > Archived UE Photo Critiques > Lens Distortion issues (Viewed 568 times)
stigofthedump 


Location: Busan, South Korea
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Lens Distortion issues
< on 6/15/2008 2:12 PM >
Posted on Forum: UER Forum
 
Can someone help me figure out how to correct this photo, or is it beyond repair? I've got a photoshop bible, but can't seem to wrap my head around the lens correction filter.



Although the photo isn't that great (looks better as a set), the thin that is pissing me off is the door in the middle that is curved like a banana.

Is it possible to remove this distortion? If I do, will it bugger up the rest of the image?

Geo 






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Re: Lens Distortion issues
<Reply # 1 on 6/15/2008 2:45 PM >
Posted on Forum: UER Forum
 
I gave it a quick cheat in PS, its better. For quick corrections I use the spherize filter. There are lens correction DB's, depending on the lens you may be able to find your lens.
G
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stigofthedump 


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Re: Lens Distortion issues
<Reply # 2 on 6/16/2008 3:41 AM >
Posted on Forum: UER Forum
 
Thanks for that!

Steed 


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Re: Lens Distortion issues
<Reply # 3 on 6/16/2008 4:32 AM >
Posted on Forum: UER Forum
 
Could this mean that you finally have new pictures for us?

hydrotherapy 

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Re: Lens Distortion issues
<Reply # 4 on 6/16/2008 12:06 PM >
Posted on Forum: UER Forum
 
Lens correction in photoshop tends to work best if your photo was architecturally shot from straight on- meaning it won't always fix your edges if they fall outside the grid that it uses to correct. Sometimes if you extra-cheat and use the x and y correction (also under the "lens correction" filter menu) you can get things to workout a little better.

Never thought you use spherize to fix distortion though, so thanks for the suggestion, Geo.

Get down, girl, go 'head, get down.
hatsumi 






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Re: Lens Distortion issues
<Reply # 5 on 6/16/2008 12:48 PM >
Posted on Forum: UER Forum
 
a good photo does'nt need photoshop


my 2cents

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hydrotherapy 

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Re: Lens Distortion issues
<Reply # 6 on 6/16/2008 1:23 PM >
Posted on Forum: UER Forum
 
Posted by hatsumi
a good photo does'nt need photoshop


my 2cents


Even the best wide-angle lens will cause some barrel distortion or vignetting, especially if it has filters on it.

Someone asked, in this thread, how to correct this. They didn't ask whether or not a good photo needed photoshop. Your 2cents contributed nothing.

Get down, girl, go 'head, get down.
stigofthedump 


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Re: Lens Distortion issues
<Reply # 7 on 6/17/2008 1:22 AM >
Posted on Forum: UER Forum
 
Posted by hydrotherapy
Lens correction in photoshop tends to work best if your photo was architecturally shot from straight on- meaning it won't always fix your edges if they fall outside the grid that it uses to correct. Sometimes if you extra-cheat and use the x and y correction (also under the "lens correction" filter menu) you can get things to workout a little better.

Never thought you use spherize to fix distortion though, so thanks for the suggestion, Geo.


Thanks for that tip.

I think I'll try spherize and then go into lens correction.


stigofthedump 


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Re: Lens Distortion issues
<Reply # 8 on 6/17/2008 1:24 AM >
Posted on Forum: UER Forum
 
Posted by racetraitor
Could this mean that you finally have new pictures for us?


I could do. I've only got a few from this school. I wanted more, but there were some locals playing football out front.

I'm gonna be taking a walk near that building near the ferry terminal that you saw. Plenty of rusty ships and anchors and what not.

Speed 


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Re: Lens Distortion issues
<Reply # 9 on 6/17/2008 1:39 AM >
Posted on Forum: UER Forum
 
Posted by hydrotherapy


Even the best wide-angle lens will cause some barrel distortion or vignetting, especially if it has filters on it.

Someone asked, in this thread, how to correct this. They didn't ask whether or not a good photo needed photoshop. Your 2cents contributed nothing.


thank you.(serious)

I've found that the lens correction tools n CS3(filter>distort>lens correction) work well but the trade off is a slight loss of sharpness.

even $1000+ Canon "L" series lens need a little correction sometimes......

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GAM1 


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Re: Lens Distortion issues
<Reply # 10 on 6/17/2008 5:57 AM >
Posted on Forum: UER Forum
 
another program that can do some lens correction is Autopano Pro. I watched a video where it did lens correction in a panorama.. neat stuff.

silver halide 


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Re: Lens Distortion issues
<Reply # 11 on 6/17/2008 6:23 AM >
Posted on Forum: UER Forum
 
If its just that one thing that's bugging you, there's mesh warp features as well that would let you isolate that one area and affect it.

c./

yokes 


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Re: Lens Distortion issues
<Reply # 12 on 6/17/2008 11:49 AM >
Posted on Forum: UER Forum
 
Check out the program DXO. It is excellent

"Great architecture has only two natural enemies: water and stupid men." - Richard Nickel
Rankine Cycle 


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Re: Lens Distortion issues
<Reply # 13 on 6/20/2008 2:26 AM >
Posted on Forum: UER Forum
 
Posted by yokes
Check out the program DXO. It is excellent


X2. he's 100% correct. DXO optics has the best lens correction routine I have ever seen. It actually reads the lens you have on, the zoom you are at and looks up the precise distortion in a database and corrects it dead nuts. It is beyond amazing. ten thousand times better than messing with the corrections and mesh warps in PS...

yokes 


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Re: Lens Distortion issues
<Reply # 14 on 6/20/2008 3:00 AM >
Posted on Forum: UER Forum
 
Of course... DxO is only recommended if you have a camera/lens it supports.

"Great architecture has only two natural enemies: water and stupid men." - Richard Nickel
DJ Craig 

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Re: Lens Distortion issues
<Reply # 15 on 7/1/2008 12:50 PM >
Posted on Forum: UER Forum
 
Posted by hatsumi
a good photo does'nt need photoshop


my 2cents


A good Photoshopper doesn't need a good photo. A good painter doesn't need a camera. Does it matter?

Photoshop is just another tool. The skilled use of this tool is no less an art form than the skilled use of a camera. Or a paint brush.

"You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose. You're on your own. And you know what you know. And YOU are the one who'll decide where to go..." -Dr. Suess
UER Forum > Archived UE Photo Critiques > Lens Distortion issues (Viewed 568 times)



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