Lens Distortion Applications

This is just a general inquiry = is there an application which will help in reducing distortion
of photos ? I have several good photographs which have a lot of distortion in them.
If there an applicaton for distortion or a good course to use the distortion application in Camera Raw
Thanks
Dave Harman

This is just a general answer = for an application to reduce distortion one first has to know what type of distortion.  (Sorry, could not resist).
There are many different types of distortion and each one would have a unique correction.  There is a wide array of lens distortion adjustments in ACR.
Since each problem is unique I would recommend making a copy of your picture and just start moving the sliders to see it it looks better or worse.  Kind of like an eye exam.  Do you like 1 or 2?  2 or 1?
Generally ACR is set up to work from top to bottom with the sliders.
After you play with it awhile and come up with specific questions go the the Camera Raw Forum and post them there.
Hope this helps.

Similar Messages

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  • Lens Distortion Non-linear Distortion and Perspective Distortion

    Hello everyone, I'm a member of the vision team in the Intelligent Ground Vehicle team in Cal State Northridge, an autonomous robot that uses real time feed and laser data as sensors.
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    [email protected] 

    I'd like to correct the information provided by Bruce. It was correct up til Vision Development Module 2010. You need to update, Bruce ;-)
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    The microplane algorithm that Bruce described is still availale, as it can be used to solve applications in which the object you're trying to calibrate is non planar, and can be calibrated by wrapping the grid around the object.
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  • Perspective/lens distortion correction

    About the only thing I ever have to go out of LR2 to do is correct for perspective or for lens distortions (esp. on wide angle lenses). I know this might not be an easy thing to fit in the interface, but it'd be very useful. Especially if you can set it up to do a stored lens distortion correction for a given lens at a given focal lens (+ maybe focus distance).
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    I hope y'all don't mind if I think aloud a little more here.
    We've been talking about perspective correction and lens distortion correction as if they were just about the same. They aren't.
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    Let's take a look at the local adjustments: Crop, rotate, red-eye, spot removal, graduated filter and adjustment brush.
    Crop would be well-nigh impossible to mix in with lens distortion correction, another reason to have the correction applied first. With regards to perspective, it should behave more or less like it does towards rotation.
    Rotation can actually be done internally using the same operations that perspective correction would, but should probably still be separate in the interface.
    Red-eye and spot removal both operate on horizontal-vertical ovals (restricted ovals for spot removal). These would be awful with user-adjusted lens distortion correction, even more reason to have that be an initial step. Perspective correction would stretch them somewhat. What happens when the user makes a dust spot fix, then fixes the perspective, then attempts to adjust the dust spot fix? We end up with the same situation as with vignetting: That there are pre- and post-crop versions. This distinction would now have to extend to pre- and post- crop+rotate+perspective adjustments. Obviously, you'd also want to be able to spot remove based on the corrected image, and it'd be strange to have a tool that's bent. It may be necessary to separate out dust spot removal from "subject matter removal" (including red-eye), as dust spotting should always be before perspective correction.
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    We already have an example of a similar situation: Red-eye removal and rotating. Try making a red-eye correction, then rotating the picture sharply. The red-eye oval will stay in the same position, even though that moves it from where it was supposed to be. I guess graduated filters could behave similarly.
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    I'm trying to correct the distortion caused by a wide-angle lens in Premiere CS6. From what I can tell, there is no filter or transform / distort feature within Premiere itself. I followed the steps in this tutorial to open the MPEG4 in Photoshop, apply the lens correction filter, and then export the video again to be re-imported to Premiere. http://podcasts.creativecow.net/adobe-premiere-tutorials-podcast/correcting-lens-distortio n
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    Both these replies are a bit rude and unhelpful. I am editing in Premiere, and I am not very familiar with it. The question is about how to fix lens distortion in Premiere. Maybe there's a way to do this that I'm not aware of...? That's why I asked the question! There's nothing about it that I could find in the forums. The only fix I found didn't work—which was to use Photoshop *integrated with Premiere*. And two people tell me to use AEFX without pointing me in any directions of how to do that. Useless.
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