Known Participant

Question

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

Forum|Forum|2 years ago
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.

macOS

This topic has been closed for replies.

S

Steffen Boelaars

Participant

This is happening for me, and gets resolved when I disable the GPU, which is of course not at all preferred.

My system: MacBook Pro 16-inch 2019, AMD Radeon Pro 5500M 8GB, Lightroom Classic 14.0.1

Graphic Processor on (auto):

Graphic Processor off:

D

daveRedShed9UK

Participating Frequently

Don't expect any help from Adobe on this other than continuing to charge you a monthly licence fee for software they didn't test properly that they claim runs on the minimum specs of older Macs. You have 3 options

1 - Regress to an older version and keep paying your licence for zero updates

2 - Disable using the graphics processor in preferences > performance (works for some people but makes things slower)

3 - Buy a new Mac

I ended up doing 2 then 3. My preferred option would have been for Adobe to release a one off payment version for the last good version as many, many people were impacted. They have acknowledge the problem as I had several calls with their devs then thing just went quiet with no emails replied to. Not a great customer experience.

A

Anna38649095hw4d

Participant

Hi community, I have been transitioning from Lightroom to Lightroom classic and have an issue when displaying my photos, sometimes which actually is quite often now there is a weird color comes out on the photos which really distracts from any edit , it's like colour noise, sometimes blue, purple , yellow ets. I don't have histogram flags on and I have turned off show clipping and it's still on . In times it disappears but then comes back again, any idea how to fix it ? I really want to use class to improve my edit but it makes it so frustrating!

thanks in advance

Rob_Cullen

Community Expert

You will find a long forum thread on a topic that looks similar to yours-

Here- Colored "pixel" artifacts where John Ellis gives answers like-

"Since the previous messages were posted, it's come out that versions LR 12.4 and later have an incompatibility with older Macs with graphics processors whose drivers are no longer supported by their manufacturers:"

This would be worth investigating.

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 .

.

. .

Participating Frequently

SOLVED: If you have AMD Graphics on your intel Macbook Pro, just restart your computer and it will fix it. Recent drivers have this problem. Not only in Adobe apps. Even my Spotify album artworks looked like that. This starts to happen after usage of Lrc. I wasted hours for installing different versions of Camera RAW and Lrc. However, the solution was to reboot my computer. I refuse to turn of hardware acceleration on Lrc. I heavily rely on the new Denoise (Enhance) feature of Lrc.

J

Jao vdL

Community Expert

Turning off the GPU acceleration in Lightroom preferences does not disable it for AI enhance. In fact you can't turn off the GPU for the AI features. The toggles in preferences only apply to the camera raw pipeline and to acceleration of the display. The way to circumvent the problem entirely without having to reboot regularly appears to be to turn off all the acceleration except for the display acceleration. That will still allow you to do the AI enhance and all the AI masking works just fine.

U

Udo Tanske

Participant

woran kann es liegen, dass ich in den dunklen berichen nach einen Weile immer fabrbige Pixel habe. Ich nutze Mac OS 12.7.4 Lightroom Version 7.2

johnrellis

Legend

"what can it be that I always have fabrige pixels in the dark reports after a while. I'm using Mac OS 12.7.4 Lightroom version 7.2"

See this post for LR Classic workarounds:

https://community.adobe.com/t5/lightroom-classic-discussions/p-colored-quot-pixel-quot-artifacts-subdued-blacks-in-shadow-areas-older-macs-also-visible-on-cr/m-p/14375873/page/4#M353952

Similar workarounds for LR 7.2 will probably help.

M

Madfire

Participant

Hi!, I have a problem with my display. Gray highlight appears whenever I adjust my shadows and blacks. There's no problem when I export it. I just want my photos appear without the gray highlight in loupe view. The gray highlight disappears when I change my process version to version 1 or 2 in settings menu.

Current version (6)

Version 2

AxelMatt

Community Expert

A possible cause could be a defective monitor profile.

Please take a look here: How do I change my monitor profile to check whether it’s corrupted? | The Lightroom Queen

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 8 - PureRAW 5 - Topaz Photo

N

Notabeagle

Participant

I'm running the latest update for Lighroom Classic, on a MacOS Monterey 12.7.2

When I edit photos (usually of a dark coloured dog), on my preview any harsher shadows come up grainy, and either a hue of orange/red/green, and almost inverted??

I've attached some images of how it appears in my preview, and how it saves once exported (Which is usually normal) But it is obviously inconvienient and a bit furstrtating not being able to see how the image looks before exporting....

And ideas on how to fix would be great!

johnrellis

Legend

See this post for workarounds:

https://community.adobe.com/t5/lightroom-classic-discussions/p-colored-quot-pixel-quot-artifacts-sub...

N

Notabeagle

Participant

That's solved it, thank you for your help!

🙂

E

Ellarsee

Known Participant

I've got some old photos that could really benefit from modern noise reduction.
I ran the noise reduction, and the first thing I noticed was blue in the deepest shadows, I then noticed weird posterization in other shadows.
When I exited to loupe mode, the weird effects disappeared. This is good in terms of getting a final image, but it's still impossible to do careful processing in develop when that isn't what the image will look like.

I'm running lightroom classic 13.1 on Monterey on a late 2013 trashcan mac pro

johnrellis

Legend

@Ellarsee, see here for workarounds:

https://community.adobe.com/t5/lightroom-classic-discussions/p-colored-quot-pixel-quot-artifacts-subdued-blacks-in-shadow-areas-older-macs-also-visible-on-cr/m-p/14375873/page/4#M353952

rjh77

Participant

When loading images into Lightroom Classic I am seeing extreme noise in the dark areas of the image in processed in version 6. When I switch the process version to 3 or 4 the noise disappears. I am running on macOS Montery. The images are CR2, CR3 raw image from Canon 5D M II and Canon R6 M II.

J

Jao vdL

Community Expert

If you are on an older Mac (which would be my guess since you are only on Monterey), your problem is probably this: https://community.adobe.com/t5/lightroom-classic-discussions/p-colored-quot-pixel-quot-artifacts-subdued-blacks-in-shadow-areas-older-macs-also-visible-on-cr/td-p/13865745

The fix is to turn off gpu acceleration.

rjh77

Participant

Thank you! That was the problem. I disabled my GPU function and everything is back to normal.

N

Nadss

Participant

Does anyone know what is happening here? I updated to version 13.1 and since then, this colour distortion (or whatever it is) has been happening in Develop mode. I haven't touched the histogram at all (but have played around with it and nothing helps). It makes editing very difficult. Let me know if any of you have any thoughts that could help. Thanks!