Lightroom- Why does auto white balance no longer work after changing camera profile?

[Dave_W]

Oops. That is not right. It is true of JPG, we normally actually change the original data and its gone (Raw does offer an exception for that too).

One of the most major advantages of Raw is the lossless editing. Changes are NEVER applied to the Raw file. There is never anything to undo.
Raw simply saves the list of changes. When we make different changes, it simply edits the list, replaces one future instruction with another. These actual edits only occur at any output (or any viewing), only on the output, never to the original data. The original Raw pixels are never changed, we always start with the pristine original raw files every time, by merely opening the editor. We can even crop the dickens out of it, and then change our mind next month, and we see all the original pixels again.

Lossless editing.

I think you misunderstood me. I was talking about the way lightroom in treating these images. I did not mean to infer that the original file was being changed, only additional layers are being added on top of the image you're seeing.

 

[paul_b]

So, have i understood this all correctly then (at least for my D3100):

'Adobe standard' is recommended because the white balance controls in Lightroom work as Adobe intended (i.e 'as shot', 'flash' etc).

However, if i want to use the Nikon profiles Adobe have made i.e 'camera standard' etc then the only way to adjust the white balance is either manually (temp & tint sliders) or with the 'white balance picker tool', and the white balance needs to be started off 'as shot' and then adjusted manually.

So in theory, neutral is neutral for both 'adobe standard' and say 'camera standard' and thus the 'white balance picker tool' works the same for both.