In-cab Brightness Changes (crr, F7)

I made a few night's runs (CRR, F7). I do not know if this phenomenon also occurs in SD 40.

Below, two pictures. The dark version is the basic version (A), and then the cabin looks like on the second pic (B). Theory:

A -> tunnel (lighting changes, let's call that variant - C) -> B (after leaving the tunnel).
After that, A never appears again.

Maybe it's just me BR o7

PS At first I thought it was a matter of local lighting (settings) at the start in Elkhorn, but northbound services are the same.

 

There are different levels of ambient light at night, depending on the time and the season.

 

this is during one run - second after second

 

Hmmm.

 

yeah, I know - weird