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[OM] Re: PhotoShop lens correction question

Subject: [OM] Re: PhotoShop lens correction question
From: Chris Barker <ftog@xxxxxxxxxxxxxx>
Date: Sun, 5 Aug 2007 06:00:05 +0100
Chuck, there are 2 possible obstacles, it has layers and it is  
greyscale.  If I flatten the image and make it RGB the lens  
correction is available.

Chris

On 4 Aug 2007, at 23:22, Chuck Norcutt wrote:

> I downloaded AG's new B&W beauty <http://image66.blogspot.com/>  
> (the one
> with all the block, bricks and staircase) because it looked a tiny bit
> out of kilter and I couldn't decide if it was tilted, perspective or
> lens distortion or all of the above.  I wanted to see what was  
> necessary
> to correct it.
>
> I loaded it into PhotoShop CS3 to try using filter -> distortion ->  
> lens
> correction for the very first time and was a bit startled to find that
> the "lens correction" option was grayed out.  I loaded a different
> (color) JPEG image and then lens correction was available.  I tried
> turning the color image to B&W but that had no effect.  Lens  
> correction
> was still available.  Then I thought maybe there was an association
> bewteen EXIF and no EXIF data.  So I loaded some old film based  
> scanner
> images and lens correction works there too.
>
> What's peculiar about AG's image?  Why doesn't lens correction want to
> work on it?



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