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Inspiring
August 15, 2016

P: White balance dropper target location is offset on high-DPI Windows devices

  • August 15, 2016
  • 54 replies
  • 3266 views

There appears to be a bug affecting all recent versions of Lightroom on high-DPI Windows devices. It affects both CC and standalone versions, up to and including the current version (2015.6.1).

The issue is that when using the white balance dropper tool in the Develop module, the target location Lightroom uses does not correspond exactly to where the point of the dropper is located. Specifically, it seems to reference a position about 5 or 6 millimetres above the point of the tool.

The issue also affects the manual defringe dropper in the Lens Corrections panel. Other local develop tools seem not to be affected (brush, spot healing, HSL/Color/B&W picker, etc.).

To be clear: the issue affects Lightroom when the device is used in standard desktop mode with a regular mouse as the pointing device. It is not an issue with the touch screen, the pen or Lightroom's touch mode.

The problem is described in detail with screenshots here (in the original post and in my reply):
https://forums.adobe.com/message/8942657

It's also discussed briefly here:
https://www.reddit.com/r/Lightroom/comments/4wlf4i/lightroom_dropper_bug_on_surface_pro/

    This topic has been closed for replies.

    54 replies

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    Péter Kollányi
    Known Participant
    February 21, 2024

    I also bought a 27" ASUS PA279CRV 4K monitor in addition to my previously mentioned laptop with a 4K monitor. On this monitor, it is enough to set the monitor scaling to 150% in Windows 11. Unfortunately, the positioning problem also occurs on this monitor. .

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      Péter Kollányi
      Known Participant
      December 13, 2023

      Another four months and nothing happens. 😞

        P
        Péter Kollányi
        Known Participant
        August 11, 2023

        Nothing happens in the case? Are there so few of us affected subscribers that Adobe refuses to fix such a basic error for our sake?

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          Péter Kollányi
          Known Participant
          December 5, 2022

          It still didn't solve the problem for me. It is now 05-12-2022. So the problem is quite annoying. I also reported it here, but no response was received:

          https://community.adobe.com/t5/lightroom-classic-discussions/mouse-click-inaccuracy-in-the-straighten-tool-and-eye-dropper-on-hightdpi-monitors/m-p/13032243

          C
          COBill
          Known Participant
          June 20, 2020
          I agree with you but we need to understand that this is a problem due to the way Windows manages scaling as well as the video card drivers. I think that it was great that the Lightroom team was able to come up with a fix but also that we should expect these kinds of problems until Microsoft redesigns its scaling implementation. In the interim, the only reliable solution is to use the defaults for scaling and resolution. Sad but true. 
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          Fishweasel
          Inspiring
          June 20, 2020
          I'm not sure the intention of your comment that it shouldn't have been a problem in the first place but I would like to highlight a couple points:

          1) the majority of comments listed above highlight the fact that it is an interaction between the scaling and resolution in 4k monitors.  I think many would acknowledge that it works in recommended windows scaling unless there are other issues.

          2) many people, myself included, use a larger scale as the font is quite small in 4k resolution.  In my case, I scale to 125% due to eyesight challenges.

          3) speaking for myself only, no other programs that I use have an issue with this scaling, and most Lightroom functions didn't have any issue other than the eyedropper.

          This was clearly an issue for many of us, and speaking for myself, I'm grateful that Adobe was able to address this issue as it now works properly at 125% scaling on a 4k monitor.
          C
          COBill
          Known Participant
          June 19, 2020
          This problem will sometimes occur with a bad video card update for monitors over 4K resolution. It can also be caused by not using the Windows recommended Scale and Resolution. Not sure why 9.3 fixed this for you as you shouldn't have had the problem in the first place. 
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          Fishweasel
          Inspiring
          June 19, 2020
          Awesome!  This last update fixed mine!  Thank you!!!!
          croucrou.com
          croucrou.com
          Participating Frequently
          June 19, 2020
          yesss in my case the 9.3 update solve the problème
          Rikk Flohr_Photography
          Community Manager
          Rikk Flohr_PhotographyCommunity Manager
          Community Manager
          June 16, 2020
          Version 9.3, an update to Lightroom Classic, went live on June 15, 2020 and contains a fix for this issue. Please install the update and respond back if it does not cure the issue for you. Thank you for your patience!
          Rikk Flohr: Adobe Photography Org
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