Hi,
I've got a couple of RAW files from my E-M1 and 12-40mm lens that have some Chromatic Aberration.
I'm trying to figure out how to fix them in RawThreapee.
The JPEGs from the camera are OK (wrt CA), and the Oly Viewer is able to correct the CA, but I don't like its interface and want to learn how to use RT fully.
RT can load LCP Lens Correction Profile files, but I've done some searching and afaict they don't seem to exist, other than that they are supposedly 'built-in' to the RAW files. However RT will only let you choose the auto CA correction setting if you have an LCP file loaded.
So,
1. are there any LCP files available for our lenses, or some way to get RT (current version, 4.0.12.60) to recognize the embedded profiles?
2. without an LCP file, what is the best way to try to remove CA in RawTherapee or Gimp or similar?
Example, 100% crop from RAW:
This part of the image is somewhat over exposed, fwiw.
Also, the CA isn't quite this bad before hitting 'Auto Levels', etc. in RT but it's still pretty bad.
Thanks,
Barry
I've got a couple of RAW files from my E-M1 and 12-40mm lens that have some Chromatic Aberration.
I'm trying to figure out how to fix them in RawThreapee.
The JPEGs from the camera are OK (wrt CA), and the Oly Viewer is able to correct the CA, but I don't like its interface and want to learn how to use RT fully.
RT can load LCP Lens Correction Profile files, but I've done some searching and afaict they don't seem to exist, other than that they are supposedly 'built-in' to the RAW files. However RT will only let you choose the auto CA correction setting if you have an LCP file loaded.
So,
1. are there any LCP files available for our lenses, or some way to get RT (current version, 4.0.12.60) to recognize the embedded profiles?
2. without an LCP file, what is the best way to try to remove CA in RawTherapee or Gimp or similar?
Example, 100% crop from RAW:
Subscribe to see EXIF info for this image (if available)
This part of the image is somewhat over exposed, fwiw.
Also, the CA isn't quite this bad before hitting 'Auto Levels', etc. in RT but it's still pretty bad.
Thanks,
Barry
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