The lighting is fine, currently, (With modifications or not) but the fog isn't consistent between objects. The closest thing I can think of are the first movies to overlay animation or 3D objects onto film and their were visible seams or the lighting is different between the two films.
The 3rd picture I think is where the most obvious effects are. The castle is like a cutout from one picture, the foreground rocks and dirt is another picture, the rock cliff on the right is another picture, and the sky is way to close to the ground. Looks like I can almost touch it from here.
The outskirts of the map look nice, gives me the feeling the world is pretty large. Can't wait to see more!