Luminous Landscape Forum

Raw & Post Processing, Printing => Adobe Lightroom Q&A => Topic started by: dreed on April 04, 2012, 10:15:07 am

Title: Is it possible to correct white balance with two different light sources?
Post by: dreed on April 04, 2012, 10:15:07 am
Tonight I was attempting to photograph penguins at a local rock colony and on occasion, there was light from two different sources: street lamps with a yellowish colour and flash lights covered in red plastic casting a red-pink light.

For both, the white balance is set to 2000K and the difference is the tint (+7 vs -68)

Tips?
Title: Re: Is it possible to correct white balance with two different light sources?
Post by: JimGoshorn on April 04, 2012, 11:07:40 am
If you have Lightroom 4, you can white balance for source and then use the adjustment brush and brush in the other white balance where needed.

If you are using Photoshop, output one image for each white balance and then layer them in Photoshop and use masks for each area of white balance required.

Jim
Title: Re: Is it possible to correct white balance with two different light sources?
Post by: JimGoshorn on April 04, 2012, 12:32:49 pm
First thing is you need to do is white balance the entire image. From your description, that means that 1/2 the image should be balanced. Now, use the adjustment brush on the parts that aren't and set the white balance for the brush to correct those parts.

Or am I misunderstanding something?

Jim
Title: Re: Is it possible to correct white balance with two different light sources?
Post by: fennario on April 04, 2012, 11:57:02 pm
Once the image has been corrected for one light source use either the adjustment brush or an adjustment GND set for the secondary temp.
Title: Re: Is it possible to correct white balance with two different light sources?
Post by: fennario on April 05, 2012, 01:26:23 pm
Couple other techniques/ideas that may work for you:

1. Color Profile Adjustment.  Tweak the hue and saturation sliders
2. Split Tone.
3. B&W with split tone
4. Photoshop vs. LR.  May require heavy lifting such as replacing color channels and/or L*A*B* colorspace curves.
Title: Re: Is it possible to correct white balance with two different light sources?
Post by: maniek on April 09, 2012, 11:21:16 am
Thanks for the great tips. Mario