■L-ANGLE■
■A gentle focus■
■To draw furniture,etc■

The expression such as furniture uses the radial line of the gentle angle. The distance of the vanishing point of this case uses R=1600.

■M-ANGLE■
■A meddle focus■
■For archtecture,etc■

It uses the radial line of the middle-like angle to draw architecture and so on. The distance of the vanishing point of this case uses R=800.

■S-ANGLE■
■A sharp focus■
■For urban planning,etc■

Use the radial line of the sharp angle to draw a big building and city planning. The distance of the vanishing point of this case uses R=400.