[slip]

After using lightroom 4 for a while I discovered that, as far as getting rid of color casts goes, there is no substitute for the eye droppers in the curves tool in PS
Is there a way to do curves in LR without opening PS?

Thanks

Randy

[Macario]

What I always do in LR, is just set your white balance on something white in the photo (if there is white ofcourse). And you can also alter the tint of the color (under white balance). works very well for me

[amoringello]

Under the Basic panel of the Development module you'll find an eye-dropper.
There is also the Tone Curve panel, but it does not allow you to affect individual color components.

In either product the best way to get rid of color casts is to bring a gray-card, or perhaps something like the ColorCheckerPassport and adjust white balance off that.
Both product's eye-droppers do a great job at correcting off a known gray value.

But in the end, LightRoom is not Photoshop. Sometimes you will find that LR just doesn't cut it.

[wildman]

getting rid of color casts

For what it's worth:

For the really lost causes like my 120 Agfachrome slides from the 1960s which had an extreme orange cast that I just couldn't get rid of -
I tried everything in all my editing programs, and I have many, and all they could do was make it better but no cigar.

Then I found the secret weapon - use the Camera Calibration curves in ACR. Extremely powerful for this purpose and no other method came even close to getting rid of extreme color cast. Finally you can touch it up using the HSL/Grayscale curves to make it more or less perfect. Then pass the image out of ACR to PS.

It's not for the faint of heart - no canned presets or magic eyedroppers just feel and intuition. You must really trust your eye but it works for those files that are really difficult but worth the effort.

Just a thought.

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Last edited by wildman; 10-09-2012 at 02:52 AM.

[Class A]

There is also the Tone Curve panel, but it does not allow you to affect individual color components.

Since LR 4, the tone curve panel allows adjusting the R, G, and B channels individually.

One can use the targeted adjustment tool of the curves panel if one feels more comfortable identifying tonal values by clicking at them in the image.

N.B. the Develop module of Lightroom is just a different interface to ACR.

[amoringello]

Since LR 4, the tone curve panel allows adjusting the R, G, and B channels individually.
One can use the targeted adjustment tool of the curves panel if one feels more comfortable identifying tonal values by clicking at them in the image.
N.B. the Develop module of Lightroom is just a different interface to ACR.

Cool, How do you access the RGB channels in LR4 Tone Curve panel? All I see is highlights, lights, darks and shadows.

[Class A]

Switch to the Point Curve mode and then use the Channel selector.
There are tutorials on the web.

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Last edited by Class A; 10-09-2012 at 11:36 AM.

[amoringello]

Thanks. That was rather well hidden. :-)
Adobe has a real knack for creating some of the dumbest and least intuitive user interface workflows I've ever seen.

[slip]

Switch to the Point Curve mode and then use the Channel selector.
There are tutorials on the web.

Thanks that rocks!
If only had LR for PlayBook ™ I would be all set

Thanks again

Randy