Distortion correction

Michael Sonshine

• 2018年06月01日 16:51

I just upgraded to version 11 from version 9 and have run into a puzzling issue.

I recently purchased a fisheye lens and when I opened the image in C1-11 the software correctly identified the lens, but did not apply and automatic corrections. I used the distortion slider to correct the fisheye distortion, and it did so, but it severely chopped off the left and right parts of the image off to retain the original image format (4x3, this is an Olympus E-M1.2). I wanted the left and right sides visible so I could crop the image the way I wanted, but could not get it to do so.

I then noticed a checkbox marked "Hide Distorted Areas", which was checked, so I unchecked it assuming it would now show the distorted areas, but it did not. Nothing in the main image changed, regardless of the state of the checkbox. The thumbnail did change, but that does me no good. Is there any way to get C1 to show me the entire image? Or do I have to export the image to an external tool like PTLens to crop the image as I wish? I was going to submit a bug report but thought I should first find out if I am doing something wrong.

Thank you for any help.

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  Ian Wilson

  Moderator

  • 2018年06月01日 17:13

  

  Can you see what you want if you engage the crop tool?
  
  Ian

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  Michael Sonshine

  • 2018年06月01日 17:32

  [quote="Ian3" wrote:
  Can you see what you want if you engage the crop tool?
  Ian

  
  I had not thought to try that.
  
  Thank you as that seems to have solved the problem.

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  Christian Gruner

  • 2018年06月01日 20:54

  [quote="MikeFromMesa" wrote:
  the software correctly identified the lens, but did not apply and automatic corrections.

  
  
  This is by design when talking about fisheyes. Usually, if you buy a fisheye, most will use is for its effect. So we don't auto-apply the correction, but instead give the user the option to enable it.

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  Michael Sonshine

  • 2018年06月02日 17:17

  [quote="Christian Gruner" wrote:
  

  [quote="MikeFromMesa" wrote:
  the software correctly identified the lens, but did not apply and automatic corrections.

  
  
  This is by design when talking about fisheyes. Usually, if you buy a fisheye, most will use is for its effect. So we don't auto-apply the correction, but instead give the user the option to enable it.

  
  OK. I can understand that. I use them, when corrected, for landscape panos but I do understand that most users probably want the distortion.
  
  However I have a second, related question. In order to correct the FE distortion I have been using Dxo's ViewPoint 3. I select "Edit In" and send a 16 bit tiff to ViewPoint 3 and that software does an automatic correction on the image giving me a more-or-less rectilinear image. However when I save it back as a 16 bit tiff I get only a very small image. I have to save it back as an 8 bit tiff to get a real image and I was wondering if there is some C1 restriction on how returned images have to be handled by an external editor for it to be useable when returned.
  
  I understand that this may be a ViewPoint issue, not a C1 issue, and I do not see the same problem if I use PTLens instead, but can anyone shed any light on why I get an unusable image back from ViewPoint 3 unless it is saved as an 8 bit tiff?

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