调子对素描而言是指画面不同明度的黑白层次,也就是面的深浅程度。黑白灰三大面中,根据受光的强弱,形成了五大调子:亮调、灰调、明暗交界、反光、投影。素描的关键就是在画面中树立调子的整体感,即画面黑、白、灰的关系,运用好几大调子来统一画面。 In terms of the sketch refers to the black and white picture of different brightness levels, that is, the degree of the surface of the depth. Three black and white gray surface, according to the intensity of light, formed five major tone: light tone, gray tone, light and shade at the junction, reflective, projection. The key to sketching is to set the tone of the overall sense of the screen, that is, the relationship between the screen black, white and gray, the use of several keynote to unify the screen.