The ISO will change depending on the scene the camera sees: your position changes between the first two images, so the camera isnt seeing the exact same scene. The "fog" in the second image is NOT a result of the ISO change: it's only 1/3 of a stop, and its a stop DOWN not UP. That's external.
The third image is "nicer" because it's showing the atmosphere: there's no blaring flash to blow everything out of proportion.
|