Quote - However If you are using a 'Realistic Sky' when you select the Atmoshpere tab you will have the option to turn off the ground. Then all you have to contend with is the horizon. To get the effect you are after against the sky backgroud you may need to adjust the position of your figure and camera

In the 'Realistic Sky' edit button you can greater lessen the horizon effect by adjusting 'haze altitude and haze distance sliders'.