Drawing Perspective
Perspective Drawing is a technique used to represent three-dimensional images on a two-dimensional picture plane. Perspective drawing is artistically demanding because you must use your art-sense to use the rules in a creative way to come up with interesting and unusual solutions to your creative challenges. When you are working with conventional materials such as pencils and paints, or contemporary digital media, a knowledge and understanding of perspective drawing is an essential tool to help enhance your drawing technique. The horizon / eye level is the axis around which a perspective drawing is constructed. When we are outdoors we use the horizon as a point of reference to judge the scale and distance of objects in relation to us. In perspective drawing, the horizon happens to be the viewer's eye-level.
In art, we tend to use the term 'eye level', rather than 'horizon' as in many pictures, the horizon is frequently hidden by walls, buildings, trees, hills etc.
There are two elements in perspective drawing:
• Linear Perspective which deals with the organisation of shapes in space, and
• Aerial Perspective which deals with the atmospheric effects on tones and colours.
Both linear and aerial perspectives combine to create convincing illusion.
One-point perspective: One vanishing point is typically used for roads, railroad tracks, or buildings viewed so that the front is directly facing the viewer. Any objects that are made up of lines either directly parallel with the viewer's line of sight or directly perpendicular (the railroad slats) can be represented with one-point perspective.
Two-point perspective :Two-point perspective can be used to draw the same objects as one-point perspective, rotated, looking at the corner of a house, or looking at two forked roads shrink into the distance.
Zero-point perspective: Due to the fact that vanishing points exist only when parallel lines are present in the scene, a perspective without any vanishing points ("zero-point" perspective) occurs if the viewer is observing a nonlinear scene.