Auto-cropping in some wide angle lens profiles

Pavlos Papageorgiou

• 2019年08月09日 19:29

With certain wide angle prime and zoom lenses I notice that the RAW file has wider field of view than the JPEG. The extra area only appears when I activate the crop tool. What is going on?

It appears that some lenses have a wider field of view than advertised but suffer from distortion. The manufacturer's lens profile does three things:

1. Correct the distortion throughout the frame
2. Hide the edges of the frame that become curved as a result
3. Further crop the image to a smaller frame, to match the advertised focal length.

When adjusting the composition (crop/rotate) I'd like to use the widest possible rectangular image. Of course I can manually drag each side of the crop box up to the edge but it's tedious to do that for hundreds of images.

Suggestion: Could you give us a way for the lens profile to do only steps 1 and 2 above? For example provide a check-box option for step 3, or a keyboard shortcut to set them maximum possible rectangular crop.

Thanks!

1

• 

  OddS.

  • 2019年08月09日 20:45

  Pavlos Papageorgiou wrote:
  ...Suggestion: Could you give us a way for the lens profile to do only steps 1 and 2 above? For example provide a check-box option for step 3, or a keyboard shortcut to set them maximum possible rectangular crop.
  

  
  
  The Lens Correction tool has a check mark "Hide Distorted Areas". Do you get what you want if you uncheck it?

  0
• 

  Ian Wilson

  Moderator

  • 2019年08月09日 21:03

  

  Also you don’t have to have automatic lens correction applied. Click on the ... in the lens correction tool, and select the option for “Disable default lens correctionâ€. That will only affect new imports, not images already imported.
  
  Ian

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  SFA

  • 2019年08月09日 22:58

  Pavlos Papageorgiou wrote:
  With certain wide angle prime and zoom lenses I notice that the RAW file has wider field of view than the JPEG. The extra area only appears when I activate the crop tool. What is going on?
  
  It appears that some lenses have a wider field of view than advertised but suffer from distortion. The manufacturer's lens profile does three things:
  
  1. Correct the distortion throughout the frame
  2. Hide the edges of the frame that become curved as a result
  3. Further crop the image to a smaller frame, to match the advertised focal length.
  
  When adjusting the composition (crop/rotate) I'd like to use the widest possible rectangular image. Of course I can manually drag each side of the crop box up to the edge but it's tedious to do that for hundreds of images.
  
  Suggestion: Could you give us a way for the lens profile to do only steps 1 and 2 above? For example provide a check-box option for step 3, or a keyboard shortcut to set them maximum possible rectangular crop.
  
  Thanks!

  
  
  In addition to the previous answers - this forum is intended to be used as a User to User forum.
  
  To have enhancement suggestions raised with the Development team for consideration you just need to create a Support Case and indocate on the title that you are making an enhancement request for a particular tool.
  
  That way the request is recorded, managed and internally tracked to assess its popularity (request frequency).
  
  HTH.
  
  
  Grant

  0

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