r/postprocessing • u/ALRO090804 • 1d ago
How do I get rid of this?
Im not sure if this is the right subreddit for this but I noticed while I was editing, these red/magenta/pink spots. I'm using lightroom web.
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u/ImStuckInNameFactory 1d ago
What camera are you using? looks like demosaic artifacts in very early digital cameras
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u/ALRO090804 1d ago
pixel 7
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u/ImStuckInNameFactory 1d ago
Might be caused by the quad bayer sensor but that's just a guess. Are you shooting raw?
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u/ALRO090804 1d ago
What does this mean? Yes, this is raw
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u/ImStuckInNameFactory 1d ago edited 1d ago
Quad bayer is a type of sensor used in smartphone cameras trading ability to resolve fine color detail for low light performance. Try any other raw editor (not that adobe is bad, just that a different program might handle the data in a different way with most differences visible in small pixel level artifacts). Would you mind sharing the raw file?
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u/ALRO090804 1d ago
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u/ImStuckInNameFactory 1d ago edited 1d ago
Can't attatch a photo here, but Darktable shows no such color artifacts, although I'm not sure it's the same photo. One thing I'm pretty sure about is that it's likely not chromatic aberration
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u/ALRO090804 1d ago
I dont know why darktable makes it more desaturated, but when I put it in lightroom it looks normal with more color. How do I make it so that the raw looks normal in darktable?
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u/ImStuckInNameFactory 1d ago
there is no normal raw look, try "velvia" and "color contrast" modules in the color tab. Playing with these settings gave me another hint: maybe it's caused by using the wrong method to boost the colors, making the subtle color noise overwhelming, try a denoising module with separate chroma denoise (darktable has that in astrophoto denoise module)
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u/ALRO090804 1d ago
It did bring back color to the raw but the reddish highlights are still there, is there something I'm missing? It seems to be less when the green mangenta contrast is lower, its not gone but maybe less noticeable. Also, is this the default way to bring back color to my raw?
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u/Donatzsky 10h ago edited 1m ago
Unlike JPEGs, raw files are not ready for display and must be processed. By default darktable does very minimal processing, compared to most other editors, which is why it looks flat.
Darktable is powerful, but takes a bit of learning to get the most out of. My beginner guide will teach you everything you need to know: https://notebook.stereofictional.com/how-to-get-started-with-darktable-2026-edition
There are several other free raw editors you can try as well:
- RawTherapee: The mad scientist's raw editor, with some very powerful and intricate tools. A bit more Lightroom-like in its workflow.
- ART (Another RawTherapee): Started as a simplified fork of RawTherapee, but has added its own powerful and unique features since. With CTL scripts you can even create your own tools.
- vkdt: New-ish raw editor from the original darktable developer. Fully node-based and can also handle video. Probably not for the faint of heart and may not have all the tools you want, but what is there works well and is extremely fast.
- Filmulator: A great little editor with a unique concept, that's easy to use. As the name suggests, it emulates (part of) the process of developing analog film.
- LightZone: Back from the almost-dead, version 5.0 was released recently. Not the most advanced, perhaps, but has some interesting features and a flexible processing pipeline.
- RapidRAW: Aims to be a relatively simple and streamlined option for those that don't need the extensive control some other editors provide. Somewhat new and under heavy development, so the results you get today may not be what you get tomorrow.
- Safelight: An editor built around a concept of extensibility and customisation. Still very new, so expect some rough edges and missing features.
Since not all of them have library management, you may want to also use digiKam as DAM (digital asset manager).
Tutorial for both RawTherapee and ART: https://www.youtube.com/watch?v=o4-T0laAf0E
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u/LeftyRodriguez 1d ago
You could try the Remove Chromatic Aberration checkbox under the optics section, but that tool in LR Web is pretty limited compared to the chromatic aberration correction tool in Classic.