The oil painting is reflective

During the painting process of oil painting, errors in controlling the use of oil will cause several situations on the surface of the color layer: one is oil absorption (this is more common), and the other is excessive oil, showing a kind of sheen. , the partial reflection you mentioned should belong to this situation.

In addition, in an oil painting where most of the painting is oil-absorbing, the normal parts may sometimes appear highly reflective, but in fact the problem is the non-reflective parts. A correctly drawn color layer should be saturated in color and have a shiny surface but not so reflective that the color cannot be seen clearly.

The most common problem of oil absorption is that the base color is covered with a new color layer before it dries completely. The oil in the new color layer will be completely absorbed by the underlying color layer, causing the color layer to lose its luster and become dull. It is opaque and the color becomes dirty and dark. This kind of color layer is very bad. Once it appears, it cannot be repaired. No matter how many layers of color you paint, it will absorb the oil. Therefore, it must be avoided during the painting process. After a color layer is laid, estimate the drying time according to the thickness. A thin color layer will dry in three days to a week, and a thick color layer will dry in a week to a month. Therefore, the technique must be particular. Thick color layers Be careful when using it. If you are making texture in the base color, try not to use pure oil paint. You can use oil-absorbing paper to absorb the oil, mix it with turpentine or lotion, and mix it before applying (Rembrandt's thick base textures are all made of lotion and It is made by mixing lead and white powder, and is not an oil paint in the current sense.

The problem of light thief is also more common among beginners, because Chinese students learn the basic skills of gouache in oil painting. Understand oil painting according to the properties of water-based colors, because the best way to make water-based colors transparent is to add water. The more water, the higher the transparency, so you will naturally think that the way to make the color layer of oil painting transparent is to add more mixing oil, which will naturally It will cause a glossy effect. In fact, the biggest taboo in oil painting is to use too much oil. A very important training in learning oil painting is to control the use of oil. The correct way to make the color transparent is to reduce the thickness of the color layer as much as possible instead of adding oil. The less oil content, the better the painting effect and the higher the preservation quality. Excessive use of oil will not only cause the color layer to be excessively reflective, but will also cause serious discoloration in the future. The reason why many famous paintings become soy sauce toned is largely due to the use of oil. It is related to improper oil. Rembrandt’s paintings are famous for their transparent overdying. The secret of his technique lies in controlling the thickness of the color layer. The restorer testified that the color layer of his painting sometimes reaches more than twenty layers, and the thickness of each layer is very thin. It’s amazing. Oil painting masters rarely use oily pens to soak and wash the color layers like watercolors.

So, if you want to avoid the light in the painting, start by controlling the use of oil. It is necessary to gradually accumulate experience and become familiar with and master the drying time and properties of linseed oil and various dry vegetable oils.