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Kemaneo
Participant
Dec 11, 2022 11:46 PM UTC
Question

Flat-Field Correction doesn't do anything

I'm on Lightroom Classic version 12.0.1 on macOS 12.6. When I select two or more images for flat field correction the dialogue appears, when I click OK and start the process nothing happens, no error message appears and no DNG file is created. I tried both with CR3 and with DNG files.

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    11 replies

    guernb
    Participant
    Oct 26, 2024 7:55 PM UTC

    Two years later and this issue still persists. Maybe one day they will rework the feature and alow us to specify the calibration frame instead of trying to autodetect, which seems to be the root of the problem. 
    If you try to use flat field correction with a calibration frame and a low contrast image, it just fails to detect which frame is the calibration frame then does nothing. 

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    Optimistic_54
    Participating Frequently
    Apr 3, 2024 2:28 PM UTC

    Just tested flat field correction with Lightroom Classic version 13.2 on macOS 14.4.1 on 5k iMac 2019 and found that FFC can work, but success is so rare that I'd call the feature unusable.

     

    The one way that I had FFC actually do what it promises was when I followed these steps

    * quit LR including catalog optimisation

    * duplicate a pair (photo+reference) twice and rename files to create a series of ref/photo/ref/photo/ref/photo

    * open LrC and import the folder with the test images, then select the three pairs

    * apply FFC ... and check filenames carefully: Two RAW files have been renamed to DNG ... but the original RAW files are still in the folder, LrC simply kicks them out of sight.

    * sync the test folder to make the RAW files visible again.

     

    Any other test failed, be it a repetition, a test with a sequence of photo/ref/photo/ref... or whatever.

    My expectation: Adobe will fix that shaky feature asap. (I'm not going to hold my breath though)

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    tradesmith45
    Inspiring
    Aug 23, 2023 2:49 PM UTC

    Its now Aug. 2023 & I running LR 12.5 and this still doesn't work.

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    Sean McCormack
    Community Expert
    Sean McCormackCommunity Expert
    Community Expert
    Aug 23, 2023 11:09 PM UTC

    I wonder if this is related to mRaw and sRaw files perhaps? 

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    Sean McCormack. Author of 'Essential Development 3'. Magazine Writer. Former Official Fuji X-Photographer.
    Wild Apple
    Participating Frequently
    Apr 25, 2023 8:34 PM UTC

    I decided to back up my preferences and did a reset. Didn't help. When I select the image and the flat-field and select Flat-Field Correction, I get a quick blink of a progress bar and then nothing.
    This was working fine as of last week. Not sure what broke it. 

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    Sean McCormack
    Community Expert
    Sean McCormackCommunity Expert
    Community Expert
    Apr 25, 2023 9:11 PM UTC

    Do you have the latest drivers for your Graphics Card?

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    Sean McCormack. Author of 'Essential Development 3'. Magazine Writer. Former Official Fuji X-Photographer.
    Wild Apple
    Participating Frequently
    Apr 25, 2023 9:42 PM UTC

    I'm on a Mac so I can only assume so. But I am running MacOS 13.2 and 13.3.1 is available. I'll update and see if that makes a difference. Other than that there aren't drivers to load on a Mac. 

     

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    Wild Apple
    Participating Frequently
    Apr 25, 2023 8:28 PM UTC

    What was the solution? I am having the exact same issue and would like to avoid resetting my preferences if possible. I can't afford to lose my presets. 

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    TheDigitalDog
    TheDigitalDog
    Inspiring
    Dec 12, 2022 12:10 AM UTC

    Try resetting your Lightroom preferences:

    https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html

    Also see: https://community.adobe.com/t5/lightroom-classic-discussions/important-steps-for-manually-resetting-preferences-omitted-from-help-article/td-p/12972518

     

    Quit Lightroom Classic.

    macOS: Press and hold the Shift + Option keys.

    Windows: Press and hold the Shift + Alt keys.

    While holding down the keys, launch Lightroom Classic. 

    When asked, select "Yes". 

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