Stroke control. Let's take a look at some basic coloring pens. Coloring techniques for planes, surfaces and spheres. According to the shape of the structure of the transformation of the pen, pay attention to the direction of the stroke control.

Comprehensive material demonstration. Vacuum cleaner renderings (plastic metal transparent).

The performance of metal materials. First of all, understand the reflection principle of stainless steel. The contrast between light and dark is extremely strong, and it is easily affected by the shape and color of objects in the environment.

The performance of glass and transparent materials. Transparent material is a difficult material to grasp, but no matter what material, there will be a boundary between light and dark. In fact, it is to make an object transparent to understand, to describe the thickness of the container, and to deal with the actual and virtual.

Application of wood grain materials. Before expressing wood grain, it is necessary to know the basic color of wood, which is generally light brown or yellowish. In addition to the color, there is also wood grain texture, which is the most representative feature.

Basic light and shadow. In addition to being familiar with the control of markers and strokes, one must also have a certain understanding of light and shadow, the setting of light sources and the control of shadows. The difference between light and dark objects is directly related to the strength of the sense of volume.

Leather material performance. The leather material is somewhat similar to the wood grain, except that the most important thing in color is the characteristics of the stitches.

Performance of plastic materials. Plastic material is the most common one. Plastic is divided into high reflection and diffuse reflection. It is OK to control the intensity of reflection in performance.

Many students asked that the marker is difficult to control and do not know how to draw a sense of volume, either gray or black like carbon. For this reason, I drew a product in i-camp class to explain it. At the same time, I also recorded a video for students who did not attend the course, hoping to bring you some enlightenment.
Video link: http://v.qq.com/page/u/2/8/u0189cwf728.html

This sketch class is mainly about the sharing of marker techniques. The brush strokes of the marker pen and the performance of various materials, the common materials in sketch are plastic, metal, transparent, leather, wood, etc. Each material has its own characteristics, which will be explained one by one below.
Know the marker pen. First of all, we should be familiar with the characteristics of marker pen, color distinction and pen operation skills. Gray is the most commonly used color, such as CG, which has a gray scale change of 1 to 9, which is very rich.