On The "shape" Of The Watch

The natural object exists in the nature of its shape,but We use eyes to watch object,Eyes depends on the light,Diffuse reflection of light produce bright, grey, dark and it formation "shape" let’s perceived object.The shape of the object nature doesn’t change,but the eyes to see the "shape" of changes with light and eyes.Painting is a visual perception activity,Rely on the eyes.This thesis attempts to study the painter methods to watch "shape",Parsing "shape" on the conversion process from natural object to picture.