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10-14-2007, 09:47 AM   #1
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Weird Distortion with DA 18-55mm - Fixable?

Please see the attached pic to see what I'm dealing with. Is the distortion obvious to everyone? Of the two tallest buildings in the scene, the one on the right is perfectly vertical. However, the one on the left is leaning to the right. I think all the buildings to the left of the centre of the photo are leaning to the right, but it's just more obvious in a tall building.

I've tried using the lens corrector on PS CS3, but to no avail. I've made a HDR version of this shot that I quite like, but that leaning tower spoils it!

Can anyone give me a hand here?

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Last edited by Miserere; 10-14-2007 at 09:56 AM.
10-14-2007, 10:07 AM   #2
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The distortion isn't so weird - if you accept that this lens is known for distortions at the widest (18mm) end. Read the review here.

You'll also notice a significant degree of vignetting at the wide end too; also normal for this lens.

Part two of your question - is it fixable?

You bet! Using the lens correction filter in Photoshop CS2 it is rendered viewable. Although the tallest building on the right has taken a tiny turn outwards. I just did it quickly so I probably over corrected a smidgen.

Last edited by J.Scott; 11-06-2007 at 03:35 AM.
10-14-2007, 10:24 AM   #3
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Thanks Jeff! I'll give the lens corrector another go. What exactly did you do?
10-14-2007, 11:43 AM   #4
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Oh yea, if you are using a uv filter for the da 18-55, take it off. lol. Its only making your vignetting worse.

10-14-2007, 11:56 AM   #5
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Miserere,
I've physically seen where 1 tall building was leaning a little in 1 direction and the next building in the other direction. And you can see this as plain as day in photographs. That might be what happened there

In the example I'm thinking about I'd almost think it was just an optical illusion.
Except for the fact that the last building built there got condemned when it was almost completed until they corrected the problem
10-14-2007, 12:16 PM   #6
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QuoteOriginally posted by Miserere Quote
Thanks Jeff! I'll give the lens corrector another go. What exactly did you do?
Here are the settings once in Filter - Distort - Lens Correction. I have CS2 so I don't know if CS3 is the same.

I just experiment until the vertical edges of the buildings line up with the grid. Once done here you can play with the levels and crop it and all that other good stuff.

Last edited by J.Scott; 11-06-2007 at 03:35 AM.
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