Can anyone explain if the difference in colouring of scenery tiles surrounding my aircraft position is normal? (See screenshot). I have been flying FSX for some years and only recently seem to have noticed it. This example is on photo scenery but it applies to default textures also. Tiles appear lighter in the distance and as you approach eventually reload with a darker shade. Looking around the aircraft, it is centered on this darker shade of tile. I have looked at the fsx.cfg file but no parameter seems to offer a possible solution.
I have an ATI Radeon HD4800 running the latest drivers.