What in the camera physics created the very different colour and light intensities between the two stiched images?
It was the exact same settings in camera, the same raw development (only saturation change) but they still got very different lights which created this harsh split?
The stiched Images more directly into the sunrise does not have this effect.
Is it something due to the light sensor angle, similar to that of solar cells that gets a worse efficiency according to solar angle?