油画技法归纳起来：薄厚、干湿、遮透、虚实四个问题。色层关乎薄厚遮透，高厚低薄亮厚暗薄，遮与透都是在底层画的基础上实施的，我的底层画用速干颜料，是直接画法，第2天干透。表层画的原则是：亮遮、暗透，中间色是半透明的“光学灰”。

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