color checker cards with lightroom curves?

[pdm]

Some times in Photoshop I will use a color checker card and use the eye droppers in the curves adjustment layer to click on black, gray, and white swatches.   Am I missing something or does Lightroom not have a way to do this with its tone curve module?   Maybe it doesn't make sense to do this in LR but it seems like it would be handy, I could 'correct' many photos at once without going to Photoshop.

[Tim Gray]

What don't you like about the white balance tool?

[pdm]

What don't you like about the white balance tool?
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Well, I like it just fine.  But I used the 3 swatches for setting the black, med gray, and white points.  It worked pretty niftily in CS2, and I could drag that adjustment layer to all the photos I took in that same lighting scenario.   Thought it is entirely possible that I have no idea what I'm talking about and setting the black, med gray and white points in this way doesn't make good sense. :-)

[Tim Gray]

Well, I like it just fine.  But I used the 3 swatches for setting the black, med gray, and white points.  It worked pretty niftily in CS2, and I could drag that adjustment layer to all the photos I took in that same lighting scenario.   Thought it is entirely possible that I have no idea what I'm talking about and setting the black, med gray and white points in this way doesn't make good sense. :-)
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You can still set the black and white points by adjusting the black point and highlights until the b&w swatches on the card start to clip then copy those settings to all similar files in the session.  The mid gray eye dropper in PS (I may have this wrong) just sets the tonality based on what you click on - so you could get the same effect using the WB tool for the mid gray swatch.