I'm correcting white balance issues for my photos in Adobe Lightroom 3. The
white balance picker tool in the
Develop module lets me to pick a light neutral grey spot in the picture from which Lightroom automatically calculates the needed data for white balance corrections. I didn't had a grey card.
- Can I set the picker so I could choose a spot that should be white (or black) after white balance corrections?
- Or should I be just fine and consider the chosen neutral grey spot as underexposed (or overexposed) white (or black); since the neutral grey is — well, neutral, and white balance corrects the white balance, not the exposure.
Compare to e.g. Photoshop's
exposure tools which both have this feature (choosing either supposedly neutral grey, white or a black spot).
I do have access to Photoshop and could correct WB with it, but I'd like to edit the photos non-destructively.
Edit: After a closer look, the
white balance picker tool doesn't ask for a target neutral grey spot but just for a target neutral.
In short: you must pick a spot which should appear as neutral — ie. where R ≈ G ≈ B — after Lightroom's automatic adjustments.
So it could be white (255,255,255), grey (128,128,128) or black (0,0,0), or any other neutral between.