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

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  • Updated 4 weeks ago
  • Solved
  • (Edited)
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/
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bitrot

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Posted 4 years ago

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Rikk Flohr, Official Rep

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I can duplicate it on a Surface book with a 3000 PX display. I will bug it. Thanks for the report. 

The amount of offset varies by the WB Eyedropper Loupe's Scale setting as well. 
(Edited)
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Arnold Bartel

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Rikk, I‘m really disappointed that this issue isn‘t fixed (again in LR8) for meanwhilst two years even though you were able to reproduce the bug!
In my opinion you should really listen to the pro and semi pro users and their performance and usability issues using high end equipment.
It‘s just weird to use pro software and have to guess where your mouse pointer is picking white balance, or where the ruler for the upright mode will be placed...
(Edited)
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Matt Fitt

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So, more than three years since this was officially logged as a known bug. 

IS IT REALLY THAT COMPLEX, FOLKS, OR DID YOU JUST BLOW IT OFF?
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E. Dinur

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In other discussions this bug has been related to as somehow connected to the Surface device or its high dpi display, but I have it on a Dell 23" 1080x1920 monitor attached to a Lenovo Y50-70 laptop running Windows 10 / LR CC 2015 6.6.1. If LR is dragged to the laptop's 4K screen the same digression between the eyedropper symbol and the sampled area as shown in the 5x5 pixels loupe occurs.
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Jack G

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Is there any ETA on a fix for this?
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Fishweasel

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I realize this is an old thread, but I just upgraded to a 4k screen and have this same issue.  Any resolution?  it doesn't seem to be fixed on Lightroom Classic CC either.  Thanks
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Oliver Stein

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I can't believe that this is still unfixed. Any idea when there will be a potential fix for this... it's really annoying.

Thanks a lot!
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John R. Ellis, Champion

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Please do Help > System Info and report the exact version of LR you're running.
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Oliver Stein

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Lightroom Classic-Version: 7.1 [ 1148620 ]
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Arnold Bartel

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I think this thread can be merged with mine https://feedback.photoshop.com/photos... addressing the same annoying issue.
Somehow irritating that it’s still not fixed although LR representatives confirm that they can reproduce it...
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Arnold Bartel

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This reply was created from a merged topic originally titled Lightroom: Mouse cursor shifted on 4k screen.

When using a picking tool in lightroom 2015.12 on a 4k screen (Radeon RX470 video card) the mouse cursor isn't exactly where the functionality takes place (like picking a color or drawing a line to straighten the horizon line).

see screenshots below:
sin
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Oliver Stein

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Just updated to the new version.

Still no change:

Lightroom Classic-Version: 7.3 [ 1164630 ]
OS: Windows 10 - Business Edition
Version: 10.0.16299
Resolution: 3840x2160
Scale 200% (my assumption is that LR can't handle this)

Any chance that this gets fixed soon?
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Matt Fitt

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This reply was created from a merged topic originally titled Lightroom Classic: White Balance Picker / Eyedropper Cursor inexplicably selects ....

In Lightroom, when setting White Balance, the eyedropper cursor inexplicably selects an area which it is neither pointing towards nor touching.

Why doesn’t it select something in the same manner as would an actual eyedropper -- at the very bottom tip -- as it does in Photoshop?

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Lage Sjöblom

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So, when are you going to fix this? How hard can it be?
The problem also applies to the straighten tool in crop & straighten.

Lightroom Classic version: 8.2 [ 1204643 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Business Edition
Version: 10.0.17134
Application architecture: x64
System architecture: x64
Logical processor count: 12
Processor speed: 3,4 GHz
Built-in memory: 32670,6 MB
Real memory available to Lightroom: 32670,6 MB
Real memory used by Lightroom: 4376,9 MB (13,3%)
Virtual memory used by Lightroom: 5319,6 MB
GDI objects count: 787
USER objects count: 2730
Process handles count: 1903
Memory cache size: 407,0MB
Internal Camera Raw version: 11.2 [ 134 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 2912MB / 16335MB (17%)
Camera Raw real memory: 2920MB / 32670MB (8%)
System DPI setting: 192 DPI (high DPI mode)
Desktop composition enabled: Yes
Displays: 1) 3840x2160
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:
DirectX: NVIDIA GeForce GTX 960 (25.21.14.1681)

(Edited)
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Matt Fitt

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I guess there just aren't enough LR folks using high-DPI Windows devices* to make it worth their time & effort.

</sarcasm>
 

*Increasingly, this is most Windows devices, I suspect.
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Dave

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Just upgraded to a 4K display with my home built PC running WIN10 and at that resolution I get this issue too.  Drop down to 1080p and the dropper works perfect.  Incredible that this hasn't been addressed yet.
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Niklas Janke

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I have the same issue now that I upgraded my PC to a matebook x pro with a 3000x2000 screen. I'm still using LR6. If I set the resolution to 1920 in width I can use LR withouth the issue. It's a real bummer though because I chose this laptop because I thought the extra resolution would come in handy when editing my photos. Glad I haven't spent money on any other adobe software so far. It boggles my mind that they have known about this issue for three years and have done nothing to fix it.
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Mathias Birsens

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Same problem here with a HP ZBook 15 G5 (4k display) in Lightroom as well as Photoshop (worse in Photoshop as not even the normal mouse pointer works the way as it should as long as i don't drag the whole program to a HD screen or downscale the built-in screen to HD - then it works like a charm).
This is really a huge disappointment for a product targeted at professionals (I'm freelancing as a visual storyteller and have to rely on Adobe products) which are increasingly using 4k screens. How is it even possible that Adobe knows about this problems for years now and isn't able to fix it? 
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Niklas Janke

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I found that the better workaround for this problem is not changing the resolution of the screen but changing to a smaller value for scaling. The default setting of my Laptop was 200%. I changed it to 175% (the next smaller value) and now it works. That of course means that EVERYTHING on your screen will appear smaller. I've pretty much gotten used to that now. It's crazy though how one bug in one programm forced me to change my entire PC experience.
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Christian Karrer

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How is it even possible that Adobe knows about this problems for years now and isn't able to fix it?


This is very funky stuff indeed, i really don^t knwo how Adobe is not able to solve this problem or at least find a workaround.....
I work with Lightroom 1.0 till now, all paid and registered software version and now that...

On my Lenovo P70 with 3840x2160 Monitor i cannot solve this problem with changing screen scaling, eyedropper tip is always offset if 100% or 350%.
It does not change either idf i change schreen resolution to 1920x1080 or even lower

Boring!

Chris



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Ed Robinson

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This reply was created from a merged topic originally titled White Balance Selector does not align on 4K monitor.

I am using a Dell laptop with the monitor resolution displaying at 4K (3840x2160). The problem I am having in Lightroom Classic is the crop level tool and the white balance selector pipette do not align with the image on the screen.

The crop level tool is not a real problem because I can use the icon top knob as the reference.

However the white balance selector pipette is a problem. I have to set the tip of the pipette on the desired area and then drop straight down until the color appears in the view box. Usually the area I am sampling is small and problematic to find and center.

I wonder if this is an isolated problem with my computer or if this is a bug appearing in all 4K resolution monitors?

Any feedback is appreciated.
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croucrou.com

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I have a Lenovo P73 with 17inch 4K
Setting to 200% or 190% scaling
and i have the same issue.

If i set scaling to 175% it solve the problem, but all is too small on un 17inch
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Bill

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4K resolution is meaningless on a 17" display, the human eye cannot see the difference unless it is within a couple of inches. 4K monitors on laptops is just a marketing scam that also has the benefit of reduced battery life. Recommendation: sell the laptop and get one with a FHD display. 
  
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Fishweasel

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I am running a 36” 4K monitor at 125% scaling and the issue still occurs. It’s not just a “tiny monitor” problem.
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Bill

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Choose the default scaling and the problem goes away. This is a Windows issue, not Lightroom. 
  • 32" = 150% 
  • 27" = 175% 
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Fishweasel

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I don’t believe anyone is arguing it works in the native display. Many of us, however, need to increase the scaling due to eyesight challenges. This is not a just a Windows issue since it works with other programs. It’s Lightroom’s interaction with Windows - blame whoever you want for this issues but it was never a problem with Lightroom with 1080P resolution.
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John R. Ellis, Champion

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"4K resolution is meaningless on a 17" display, the human eye cannot see the difference unless it is within a couple of inches."

Hmm, can you cite a reference for that? My rusty trigonometry indicates otherwise.

According to this Wikipedia article, "The maximum angular resolution of the human eye is 28 arc seconds. ... For a pixel pair (one white and one black pixel) this gives a pixel density of 128 pixels per degree (PPD)." My calculations show that, viewing a screen at a distance of 15", 128 pixels/degree translates to 488 pixels/inch.

The Lenovo P73 UDH screen is about 3840 pixels and 15.5" wide, for a resolution of 247 pixels/inch, about half than the maximum the human eye can distinguish. That doesn't seem meaningless to me...


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Bill

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I can't argue with the math but from an optical engineer I met several years ago, he gave the following limits to the resolution of the eye-brain system. To see a difference, one must be closer than:
  • 1.5 times the diagonal for 720 
  • 1 times the diagonal for FHD 
  • 50% of the diagonal for 4K 
This would be 8.5" for your 17" 4K display. I've examine monitors in stores and my experience indicates that he is correct. I certainly support that with my 27" & 32" 4K monitors. 
 

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Christian Karrer

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All other Windows Graphic programs don't show this misbehaviour on my 17'' Lenovo running at 3840x2160. I use my display for whatever application, from high-end games, architectural renderings, photo and video editing and i have no problem with any of the software i use.
In my house i have a Dell 27'' 4K Monitor and the same problem occurs, either in single monitor or twin monitor configuration, the damned eyedropper is offset.
This is definitively a problem of Lightroom for Windows and not of Windows as all other software works just fine without any offsets.
It is also unacceptable that Adobe ignore this problem, at least they could explain why they are not able to correct that.
On the end i cancelled all my Adobe subscriptions use now Capture One and it works just fine and no offset at any imaginable resolution.

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John R. Ellis, Champion

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Here's an article that starts with the assumption of "typical" visual acuity rather than "maximum" but comes to the same conclusion:

4K Monitors: Can you actually see the difference? 

"If you have average vision (which as we stated earlier is actually around 20/15 for a healthy adult), you would ideally want a 4K monitor at anything above a 14" screen size. This means that from a 14" laptop on up, the average healthy adult would ideally want to have a 4K screen. At the same time, unless you have 20/10 vision there should be no need for anything above a 4K screen on a laptop - so at least in terms of resolution a 4K screen is likely all laptops will ever need."
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croucrou.com

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the dropper works in photoshop and in caméra Raw, so adobe could do it
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Robert Somrak, Champion

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I agree this should be fixed.  Its been around for a LONG time.  You shouldn't have to mess with your scaling to make it work.
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Arnold Bartel

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There are several issues about the mouse cursor Position being incorrectly handled (see also map module problems and problems     with the alignment of the horizon and alignment tools).
Some discussion threads recommend to change the LR fonts setting to a certain value others (like this one) to choose a certain windows monitor scaling option.

Somehow one has the impression that LR somehow guesses where the mouse pointer could be...
In some functionalities (spot removal, etc.) it works correctly independent of any font sizes and monitor scaling options, in other tools it always makes troubles finding the right position.

Adobe, please unify this mouse readings by implementing it clean together for all tools!
Having bugs like this for years doesn't meet professional standards!
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Ray Vran

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For the map issues I have been able to resolve by using the windows setting to control the Font Sizes and then setting LR Font Size setting to Auto (before it was set to a % value and I had problems). 
Also the <CNTL-left Click> or just the <right click> were fine workarounds for the map module.

I has not solved the White Balance Eye dropper issue (and the other Targeted Adjustment tools (eg HSL) are also off but by a very small amount which I can live with.)
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Rikk Flohr, Official Rep

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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!
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Fishweasel

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Awesome!  This last update fixed mine!  Thank you!!!!
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croucrou.com

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yesss in my case the 9.3 update solve the problème