Depth feeling is important in image quality and expression. Depth feeling is influenced by various factors such as linear perspective, size, overlapping, shade, aerial perspective and so on. Linear perspective is known as a powerful technique for expressing depth on flat surface. But the effect of linear perspective to depth feeling is not yet understood well. In this paper, images of simple object of arrayed sphere are generated by computer graphics method and the depth feeling is subjectively estimated. It is found that the arrayed spheres on two converging lines generate depth feeling.