I have this particular photo, which is having a yellow-ish tone. I tried to use White Balance, Auto, to correct it but it leaves a blue-ish tone near the light. I tried to increase the Temperature to remove it, but then the entire photo is yellow-ish again.
I want to achieve somewhat close to Camera Raw’s Auto White Balance but failed to do so.
Are Temperature and Tint enough to do this? If not, could someone suggest me which tool to use in ART? I am on beginner level
Many thanks
Hi, glad you found your way to ART. We can help you better if you upload the RAW file and your editing profile (.arp).
Since you said you wanted to get close to the Camera Raw result, from your original jpeg I first tried to match the overall white balance (using Custom multipliers). Then I used the Color/Tone correction module with a parametric mask to target the blueish color cast and reduce the output saturation of this area:
Note: I used the latest version of ART compiled from source
Looks to me like the elliptical area under the lamp has clipped channels and probably clipped in the raw too.
So no global color balance is going to fix it, as @sguyader has shown by using masking.
P.S. Looks like an LED strip light of the cool white variety …
I think this is the problem. The ceiling lights are warm and the counter light is cool. That will be hard to fix that with colour temperature, or any setting applied to the whole image (although @yasuo did very well!). You need two different colour temperatures, one for light from the ceiling, another for the counter. And both light sources are mixing together, further complicating things.
I’m sorry, that’s not very helpful for you! But it’s important to know that this is a very tricky problem to address - you shouldn’t feel bad about struggling with this image.
Interesting to note that you were properly careful to make each channel total 100.
… on the bright side, once you start thinking about colour balance, you’ll start noticing mismatched light bulbs everywhere you go. This will make you a hit at dinner parties, let me tell you 
Is this a sensible rule or a coincidence that the sum is always 100?
You can also selectively reduce / reverse color casts with Color/Tone Correction.
Click the eyedropper then Ctrl+click a selected area on the preview and it’ll shift in the opposite hue direction. After that adjust as needed.
A good suggestion, I did not know that. We need more tutorials on how to use ART better. It is a brilliant piece of software that deserves more recognition.
Nice tip, I didn’t know either!
I also tried using the color wheel, but it didn’t give me good results.
Channel Mixer is very powerful tool. Its logic is same as camera matrix. However its UI is very mathematical and is difficult to use for human being. There for I proposed alternative UI of Channel Mixer.
nice trick,
Can you share the arp file , I cannot reproduce the result from your image yet
Thanks
Thank you very much for your help. I understand it’s because of mix lighting and there is no global setting to fix this. In general, we have a workaround of either
(1) Use a Global WB first and remove the unwanted color cast with Local edit
(2) Use a Global color mixer or Color wheel with careful tailoring of parameters (not using Temperature and Tint)
(1) of @sguyader works well for me even for other photos as I am relied on ART’s AWB to decide what is a “balanced” photo. What left to be done is to correct the unwanted color cast, via loading the Tone Correction in .arp file.
However, I think reducing the saturation to -100 is not a good solution in situations where the blue-ish area actually have some colour. It will be gray scale. I got a sample here where my wooden floor got washed away.
I am trying to have a different correction aside saturation with the mask but no luck yet.
For (2), I am not expert enough for the Color mixer but the Color Wheel is easy to use. Though, I don’t get the intuition of method.
@lphilpot Can you help me explain and providing the .arp file? I think I am missing something.
Thank you again. Much appreciated
Color Mixer - RGB Matix mode is simple and powerful but difficult to use, however Primaries Correction mode may be more helpful.
Hi @TuongPK, if you can share some problematic dng file, it might be easier for people to explain. What you get when editing a jpg is not the same in general.
Best
The reason the color/tone correction is in the local edit group is that you can apply masks to the correction.
It is a sensible rule. For a three-channel color mixer, it preserves overall brightness/luminance.
