Help with distortion

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Help with distortion

Postby Spooky on Fri Jul 28, 2006 11:24 am

Hello

Shooting now with my 17-35 lens. This shot is at 17mm. What is the best way to correct the distortion in the buildings in the top left of the shot? I have CS2

http://www.bpphotography.com.au/images/distortion.jpg

cheers
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Postby big pix on Fri Jul 28, 2006 11:46 am

use your crop tool is a simple way.......... select all image tick perspective at the top and move the bottom 2 corners inwards...... do this in small amounts not one big hit.........

there are other ways but this is very easy.......
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Postby Spooky on Fri Jul 28, 2006 11:52 am

I read that method somewhere but I cannot locate the perspecitve box to tick it?

Where is it and how do i display it to tick it?
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Postby big pix on Fri Jul 28, 2006 12:03 pm

at the top under window and help........... in PSCS and PSCS2...... a small square which you tick and the word perspective

EDIT: you will only see this when you select an area for cropping
Cheers ....bp....
Difference between a good street photographer and a great street photographer....
Removing objects that do not belong...
happy for the comments, but
.....Please DO NOT edit my image.....
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Postby big pix on Fri Jul 28, 2006 12:10 pm

opps........ left out a bit...... sorry
Cheers ....bp....
Difference between a good street photographer and a great street photographer....
Removing objects that do not belong...
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.....Please DO NOT edit my image.....
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Postby Justin on Fri Jul 28, 2006 12:16 pm

Filters -> distort -> lens distortion
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Postby Spooky on Fri Jul 28, 2006 12:24 pm

Found it thanks. But that is tough to fix, I can't say I have the knack. I can straighten them a bit but they look considerabley stretched and thinner.

Am I doing something wrong do you think? I didn't belive the distortion from this lens would be so significant and difficult to correct.

Everything I read on the net seems to imply distortion is a snap to fix blah blah. Not very intuitive to do and I don't really like my result.
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Postby Spooky on Fri Jul 28, 2006 12:42 pm

I tried it using mostly the vertical distortion in the filter distortion menu and had a bit more success. I think my position shooting down on part of the scene made it harder to correct the distortion. Still I lost more of the image than I thought I would.
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Postby avkomp on Fri Jul 28, 2006 1:15 pm

the perspective doesnt really bother me in this image, perhaps it would if I was taking a shot of a city skyline,
but the fact is the subject of this shot is the bride and groom.
I daresay that people wont be paying too much attention to the background

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Postby digitor on Fri Jul 28, 2006 2:20 pm

Spooky wrote:Hello

Shooting now with my 17-35 lens. This shot is at 17mm. What is the best way to correct the distortion in the buildings in the top left of the shot? I have CS2

http://www.bpphotography.com.au/images/distortion.jpg

cheers


Edit->Transform->Distort - it depends which bits you want straight, I straightened the buildings and the lamp-post a bit.

Image

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Postby phillipb on Fri Jul 28, 2006 2:32 pm

If you ask me, this is the best way to remove the distortion :wink:

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Postby admajic on Fri Jul 28, 2006 3:59 pm

Just shows you, dont use your lense at the extreme ends. In your case 17mm and 35mm. Just have to move your feet and get in closer or farther as the case may be.
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Postby Spooky on Fri Jul 28, 2006 4:41 pm

Digitor, well done.

Which corners did you move and to where? I don't seem to be able to get good results with transform.

admajic

Agree with you but wasn't an option to move. That was the only place I could get that shot using a tripod. I didn't have a lot of time to search for other locations either.
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Postby digitor on Fri Jul 28, 2006 4:54 pm

Spooky wrote:Digitor, well done.

Which corners did you move and to where? I don't seem to be able to get good results with transform.


The top left and bottom right, I think I left the others alone. The result is far from perfect, but I think you need to leave some perspective effect in a shot like this otherwise it can look a bit un-natural.

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Postby Spooky on Sat Jul 29, 2006 6:45 pm

Here is my image after some work

Image
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Postby avkomp on Sat Jul 29, 2006 6:49 pm

good job.

even though the background didnt bother me, this looks better with the other pp.

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Postby Zeeke on Sat Jul 29, 2006 6:53 pm

looks great... i just dont like the harsh shaddowing that youve added.. it looks too fake.. very very effective and eyecatching... just looks fake.. sorry to say... all things create a shadow with an overhead light source like the light post.. and for your shaddowing to work, the shadows need to bend to the light source.. the shadowing on the water is too harsh and thick... and doesnt help.. but very effective.. nice work

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Postby Spooky on Sun Jul 30, 2006 9:33 am

That's interesting. On my LCD monitor the tranisition from the black shadow to the water does look quite harsh. On my CRT that I did the editing on the shadow to the water is gradual and looks more natural and overall the image is darker overall.

Still I might reduce the top part of the shadow a bit.
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