With the power of Vistapro, an artist can choose to light the scene in ways which could never occur in the real world, or, if realism is desired, the correct solar position for that particular season and geographic location and time of day can be selected. Virtual Reality Labs' Distant Suns Windows program can easily calculate such solar lighting conditions in order to correctly set the light, target, and camera position to obtain maximum realism in a rendering. If lighting is left to chance, shadows may cover the scene making it too dark. Placing the sun directly behind the camera usually results in a lack of three dimensionality and contrast, although there are times when this is the desired effect. If the normal range of snow line and tree line is known, Vistapro can be used in a very realistic way.
Tree line varies with latitude until, in arctic regions, it reaches sea level.
Snow levels vary with the weather and altitude. A little research at the local library or even listening to the weather on the evening news can provide increased realism in Vistapro landscape rendering. Of course an artist needn't follow the real world as an example. Set the tree and snow lines wherever they make the picture most appealing. Use the Color Control Panel to change the colors, contrast, and exposure used to render the landscape.