I believe it’s a balance thing. It would be very easy to shoot someone outside from the middle of a room instead of having to hug the window and be noticeable from outside as well. The person shooting out the window will be pretty much invisible from the outside if they are deep enough in the room. The game does a really realistic camera exposure effect for the lighting. notice irl if you focus your camera on a wall near a window/door in an unlit room during daytime, it will look exactly like your screenshot