art of drawing and painting; painting technique
Refers to the methods, techniques, or art of drawing and painting, often in a traditional or formal context.
彼は日本画の画法を学んでいる。
He is learning the techniques of Japanese painting.
この絵は独特な画法で描かれている。
This picture is drawn with a unique painting technique.
Compound of 画 (drawing, picture) and 法 (method, law). The exact historical derivation is uncertain, but the combination naturally yields 'method of drawing/painting'.