Artists use perspective to give the illusion of depth, or 3 dimensions on a 2 dimensional surface. This is achieved in different ways. There is linear perspective and atmospheric perspective. In the illustrations in this book, the artist has used atmospheric perspective to show depth in the pictures.
There are a few different rules to follow with atmospheric perspective to help the artist create the illusion of depth. First, by creating a picture with numerous layers, the artist makes the image appear to go back in space. The use of foreground (the nearest layer), middle ground (the layer, or layers in between), and background (the layer farthest back) creates the illusion of depth. As you view a photograph of a landscape, you can easily identify these layers.
To aid the layers in showing depth, the artist can also create overlapping. By placing an object in front of another, one can see that the object is closer. To enhance this look even further, the artist can use an object's size to create depth. Objects closer to the viewer will appear larger, as they move back in space the objects will decrease in size.
A final method to create depth is in the use of color and detail. As objects move back in space away from the viewer, they lose color intensity and fine detail. The further away they are, the less the viewer sees the true color, and also the fine details.
In the illustrations of this book, the artist used a combination of all these methods to create a sense of 3 dimensions of depth in the artwork. One can use all, or just one or two, of these methods to show the viewer space in their artwork.
Eric Fronapfel