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Andrej Michelcich
Andrej Michelcich
Known Participant
June 14, 2023
Question

P: Colored "pixel" artifacts/subdued blacks in shadow areas (older Macs) (also visible on CR)

  • June 14, 2023
  • 173 replies
  • 111536 views

I updated LrC to 12.4 yesyerday. Since then a number of pixels in multiple colors appear appear quite often on the image, mostly in the areas of blacks/darks and when using Tone Curve commands. It's similar to the red/blue pixels which denoted clipping in the areas of blacks/whites, but they appear in very many different other colors. Sometimes they disappear, or decrease, after actioning the commands again, sometimes they do not. Is anybody else facing the same problem which I encounter now for the vey first time after many years of use of LrC? Thank you in advance for your advise.

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    johnrellis
    johnrellis
    Legend
    November 22, 2023

    @jaredf18260821 and @Taelor1423, see this previous reply in the merged thread for workarounds:

    https://community.adobe.com/t5/lightroom-classic-bugs/p-artifacts-resembling-clipping-warnings-odd-b...

      T
      Taelor1423
      Participant
      November 22, 2023

      Can anyone tell me what these coloured dots/marks are on my photos? They show up in develop mode on raw images and edited images. They change when I make editing adjustments. It is different from the shadow or highlight clipping. They come and go.

       

        Rob_Cullen
        Community Expert
        Rob_CullenCommunity Expert
        Community Expert
        November 22, 2023

        Your symptoms look like the graphics problems mentioned in this thread-

        https://community.adobe.com/t5/lightroom-classic-bugs/p-artifacts-resembling-clipping-warnings-odd-bright-colored-pixels-in-shadow-areas-older-macs/idi-p/13865745

         

        Regards. My System: Windows-11, Lightroom-Classic 15.0, Photoshop 27.0, ACR 18.0, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0 .
        jaredf18260821
        jaredf18260821
        Participant
        November 21, 2023

        Since updating our Lightroom Classic to v13.0.1, every time we export jpegs (any resolution with any setting) we are getting this type of result:

        This is what the image looks like in the Library before exporting:

         

        The jpg is displaying the masks that are usually only visible in develop mode showing the histogram masks (blacks, shadows, hightlights, whites). This doesn't happen with every single image but most of them are exporting this way. This is on Mac Pro (macOS monterey version 12.7.1).

         

        Is anyone else having this issue when exporting to jpg? Is there a known fix for this?

          Per Berntsen
          Community Expert
          Per BerntsenCommunity Expert
          Community Expert
          November 22, 2023

          You seem to have the issue described here:

          https://community.adobe.com/t5/lightroom-classic-bugs/p-artifacts-resembling-clipping-warnings-odd-bright-colored-pixels-in-shadow-areas-older-macs/idi-p/13865745

            irenat33389049
            irenat33389049
            Participant
            November 21, 2023

            Issue: Lightroom creates a similar effect to Solarization on dark image tones visible only in Develop mode. The issue is that when creating a JPG file export this unwanted effect gets reproduced on the exported files too.

            • Lightroom Classic Version Number: Lightroom Classic version: 13.0.1 [ 202310121438-d2af310c ]
            • OS Version Number: macOS 12.7.1

             

            Steps to reproduce:

            1 Import RAW file (Canon 1Dx CR2) in Lightroom,

            2 wait for previews to build

            3 go to Develop mode

            4 dark tones shows a strange Solarization-like effect

             

            brighter version of the same file:

             

            The before and after image were created using a virtual copy of the file, where the before version shows the effect on the dark pants and the after right side of the image shows none after clicking the HDR button.

             

            Expected result: The expected result would be a nice tone transition from black to dark and moving further to bright tones.

            Actual result: The effect is visible in Develop mode only. It creates a strange washed dakt tones effect similar to solarization. The only way to fix that was to click on HDR button under the Basic develop functions. Not ideal, since the HDR change the all image tones effecting the brigh ones which might not need any retouching.

             

            This behaviour was noted only on the latest version. 

            I uploaded a screen-capture image, but optionally I can submit an original CR2 file on request.

             

            Thank you

              T
              Teuzzo78
              Participant
              November 20, 2023

              Hi, to better explain the problem I attach some photos.

              After export I see the photos without shades in the darkest areas. From the library module I see the photo "001 library" correctly while if I move to develop I no longer see the shades as in photo "002 develop", even by lightening the photo a hole remains in the shadows "003 develop" but if I move to the module library everything goes back to normal "004 library". If I touch the lowlight triangle in the histogram nothing changes.
              Unfortunately if I export the file the result is with shadows with holes and I don't understand why.
              I use a Mac Pro Late 2013 with AMD FirePro D300 2Gb, LR + raw camera updated.

              I hope you can help me thanks

               

               

               

               

               

                johnrellis
                johnrellis
                Legend
                November 20, 2023

                Most of the people experiencing these symptoms are on older Macs with graphics processors whose drivers are no longer supported by their manufacturer.

                 

                There are many reports that setting Preferences > Performance > Use Graphics Processor to Off helps with the image display, but many report that it does not help with Export, most likely due to a LR bug in Export.  There are many reports that rolling back to LR 12.3 works around the issue, with no reports I know of to the contrary.

                  M
                  michaelk2309
                  Participating Frequently
                  November 22, 2023

                  I work on an imac v 2015. the latest Mac OS version running on it is 12.6.7 Monterey. i have been working on it for 8 years with Lightroom lassic without any problems. During a job 2 weeks ago, I suddenly had the problem that exported black and white images, which I exported as JPGs, were not displayed black in the darkest areas, but white. In Lightroom itself the images were displayed correctly. I was able to narrow down the problem, it only occurs under the new LRC version 13.0.1, which according to adobe is compatible with Mac OS 12.6.7 Monterey. I have downgraded to LRC 12 and the export works again without any problems. Does anyone have an explanation for this?

                    dnak3000
                    dnak3000
                    Participant
                    November 20, 2023

                    Some of my Jpegs are getting wierd artifacting on the image (mainly in blacks).  Any thoughts?

                      ouiouiphoto
                      ouiouiphoto
                      Known Participant
                      November 20, 2023

                      Hello. Known bug https://community.adobe.com/t5/lightroom-classic-bugs/p-artifacts-resembling-clipping-warnings-odd-bright-colored-pixels-in-shadow-areas-older-macs/idi-p/13865745

                       

                      .Sheepdog trying to help Lightroom and Photoshop beginners
                        johnrellis
                        johnrellis
                        Legend
                        November 20, 2023

                        Most of the people experiencing these symptoms are on older Macs with graphics processors whose drivers are no longer supported by their manufacturer.

                         

                        There are many reports that setting Preferences > Performance > Use Graphics Processor to Off helps with the image display, but many report that it does not help with Export, most likely due to a LR bug in Export.  There are many reports that rolling back to LR 12.3 works around the issue, with no reports I know of to the contrary.

                          T
                          teresah82230218
                          Participant
                          November 19, 2023

                           

                          After exporting from LR, some of my jpegs are looking like this.  It's very inconsistent.  It's not happening to all images.  What am I doing wrong.  I'm a pro photog and have been using LR for 20+ years.

                            ouiouiphoto
                            ouiouiphoto
                            Known Participant
                            November 19, 2023

                            Hello. It is a known bug https://community.adobe.com/t5/lightroom-classic-bugs/p-artifacts-resembling-clipping-warnings-odd-bright-colored-pixels-in-shadow-areas-older-macs/idi-p/13865745

                             

                            .Sheepdog trying to help Lightroom and Photoshop beginners
                            johnrellis
                            johnrellis
                            Legend
                            November 20, 2023

                            Most of the people experiencing these symptoms are on older Macs with graphics processors whose drivers are no longer supported by their manufacturer.

                             

                            There are many reports that setting Preferences > Performance > Use Graphics Processor to Off helps with the image display, but many report that it does not help with Export, most likely due to a LR bug in Export.  There are many reports that rolling back to LR 12.3 works around the issue, with no reports I know of to the contrary.

                              K
                              kajat97107878
                              Participant
                              November 17, 2023

                              When is this going to be fixed?? It's killing my work flow - I have tried everything. My catalogue won't open in the older LR versions so I'm forced to manually remove these coloured shadow. Not okay. 

                                S
                                studio228835314zt0
                                Participant
                                November 15, 2023
                                1. Version of the app
                                  Lightroom Classic
                                2. Platform and OS version
                                  Mac, Monterey
                                3. Basic steps to reproduce the problem
                                  perform edits 🙂
                                4. Expected result and actual result
                                  to not have yelow dots on the image
                                  having yellow dots on the image



                                Hi there - 

                                Any thoughts on whats causing this issue?
                                The yellow dots / noise if you're wondering 🙂

                                Happens on a lot of images in this catalogue.
                                This occurs on one machine (and exports the files with this too) and not another...

                                 

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