lens corrections for raw files

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Randall North

• October 23, 2018 14:14
• Edited

 I have a dmc-fz2500 panasonic camera, and when I export a wide angle shot from lightroom as a raw, I get heavy vignetting at the edge of the photo. If I export a jpg or tiff from lightroom (with lightroom lens correction applied) there is no vignetting. I would like to use raw to preserve dynamic range.

It seems that the lens correction is either faulty or not being applied for my camera to raw files.

I have provided lightroom and aurora photos

Could you please investigate?

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  Randall North

  • October 23, 2018 14:13

  here is the imported version in lightroom

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  Randall North

  • October 23, 2018 14:30

  perhaps this is a clue:

  "The FZ2500 (among others) has considerable barrel distortion at full W/A (which is when you see the vignetting). Some programs (e.g. Adobe products, Silkypix, DXO) correct for the distortion automatically based on the metadata in the .RW2 file.Other programs (e.g. Picasa, RawTherapee, PhotoNinja) do not make the correction, so you see what hits the sensor"

   

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  Denis Kotsee

  • October 23, 2018 15:18

  You're correct, Aurora doesn't apply lens correction automatically. There's Lens Correction icon (looks like an aperture) on top of the filter stack, try adjusting the distortion there.

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  K.G. Wuensch

  • October 23, 2018 17:25

  Vignetting or other lens corrections can not be applied to RAW files, the RAW are as bad as shown because the lens has a too small image circle for the sensor size used...

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  Randall North

  • October 23, 2018 20:36

  Thanks, that makes sense. 

  I wonder if you have any suggestions on using the distortion slider?

  I adjust it until it looks either not "pincushioned" or "punched out", but is there a more precise adjustment technique?

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  Angela Andrieux

  • October 23, 2018 21:03

  Hi Randall,

  Your method is the best practice at this time.

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