359 Messages
•
6.3K Points
Fri, May 17, 2019 11:29 PM
New Flat-Field Correction DNG should not remove/replace the original RAW in the catalogue
I was shocked by the new Flat-Field Correction feature removing my RAW image from the catalogue.
"You can then use Flat-Field Correction in Lightroom Classic to automatically detect and analyze the calibration frame and remove the light falloff and colour cast from the corresponding regular photo."
Great, thought I might try it out and see if the Flat-Field Correction can remove the orange colour cast from a film negative that I've photographed in RAW.
I selected a photo of the blank leader part of the film as the calibration image and then selected another film negative RAW image to be corrected, which also had a virtual copy (not selected).
Ran the Flat-Field Correction.
To my horror, my original NEF image became a DNG and so did the virtual copy!
This isn't in the User Guide section on Flat-Field Correction. I had to find out from Laura Shoe's description of the Flat-Field Correction that this is how it's been designed.
This is a very bad design decision Adobe and very poor documentation to not mention that it will remove images from the catalogue.
I think this needs to be fixed and quickly.
The Flat-Field Correction DNG should only be added as a new image to the catalogue, like other DNG's created by Lightroom. This is how it should be. Software developers shouldn't be making the decision to remove images from the catalogue. We the users make that decision.
Anyway, my experiment with using Flat-Field Correction to remove the colour negative orange cast didn't work. The Flat-Field Correction DNG hardly looked any different to the original.
Since I don't appear to have any real lens shading or optical colour cast problems with my current equipment, it looks like this is another new Lightroom feature that I won't be using.
Ending on a positive note, the new Texture Adjustment is very welcome and useful.
"You can then use Flat-Field Correction in Lightroom Classic to automatically detect and analyze the calibration frame and remove the light falloff and colour cast from the corresponding regular photo."
Great, thought I might try it out and see if the Flat-Field Correction can remove the orange colour cast from a film negative that I've photographed in RAW.
I selected a photo of the blank leader part of the film as the calibration image and then selected another film negative RAW image to be corrected, which also had a virtual copy (not selected).
Ran the Flat-Field Correction.
To my horror, my original NEF image became a DNG and so did the virtual copy!
This isn't in the User Guide section on Flat-Field Correction. I had to find out from Laura Shoe's description of the Flat-Field Correction that this is how it's been designed.
This is a very bad design decision Adobe and very poor documentation to not mention that it will remove images from the catalogue.
I think this needs to be fixed and quickly.
The Flat-Field Correction DNG should only be added as a new image to the catalogue, like other DNG's created by Lightroom. This is how it should be. Software developers shouldn't be making the decision to remove images from the catalogue. We the users make that decision.
Anyway, my experiment with using Flat-Field Correction to remove the colour negative orange cast didn't work. The Flat-Field Correction DNG hardly looked any different to the original.
Since I don't appear to have any real lens shading or optical colour cast problems with my current equipment, it looks like this is another new Lightroom feature that I won't be using.
Ending on a positive note, the new Texture Adjustment is very welcome and useful.
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2 years ago
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andrew_rodney
2K Messages
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24.1K Points
2 years ago
It's outlined here;
https://helpx.adobe.com/lightroom-classic/help/flat-field-correction.html
Author “Color Management for Photographers"
1
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christian_f_rst
148 Messages
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2.4K Points
2 years ago
1
0
SimonChen
Employee
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1.7K Messages
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32.4K Points
2 years ago
Principal Scientist, Adobe Lightroom
1
todd_shaner_6660895
Champion
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2.3K Messages
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38.2K Points
2 years ago
Simply offering the option to NOT Remove the raw file allows comparing the original next to the converted file AND the ability to keep the raw file in the catalog for future use.
5
peter_horstink
1 Message
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60 Points
2 years ago
0
0