Auto Exposure and White Balance - Script access to values when rendering is complete?

[KramSurfer]

Attempting to automate multiple Auto Exposures and store them.

Are the values that are passed to the camera via the "transfer to selected cameras" available somewhere on the renderer, vfb or as a global variable?

Hoping I don't need to do a windows.form button click hack for this one...

Thanks

[hermit.crab]

I wrote a script once that stores Auto-Exposure, Auto-WB, and other values in the .exr metadata. Maybe it could come in handy in your case.