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平视中视平线的高低,通常有两方面的意思:一是指视平线与景物关系上的高低,二是指视平线在画幅位置上的高低。这两种高低在一般情况下是统一的,有时也会产生矛盾。视平线与景物关系上的高低,常以单个物象高的下方1/3为适中线,在这界线以上逐渐偏高,以下就逐渐偏低。如视平线穿过老式平房窗户的中部,或穿过十五层高楼的第五层顶面为适中,在这以上就逐渐偏高,以下就逐渐偏低。一幅画中如有高低不同的景物,则选择综合性的适中位置为分界线,在此分界线以上为偏高,以下为偏低。视平线在画幅位置上的高低,是裁剪画幅的结果,二者是没有必然的联系。如图1与图2,二图中电杆的实际假定是等高,则视平线与电杆的关系,图2比图1定得要高。如从视平线在画幅中的位置上看,图1比图2定得要高,这就说明没有必然的联系。
Flat horizon as the level of the horizon, there are usually two meanings: First, refers to the apparent level and the relationship between the level of the scene, the second refers to the level of the horizon in the frame of the level. In both cases, the two levels are uniform and sometimes contradictory. Depending on the level of the relationship between the horizon and the level of the scene, often in the lower one-third of the height of a single image as the midline, gradually above the high above the line, the following gradually lower. If the horizon passes through the middle of an old-fashioned bungalow window or through the top of the fifth floor of a fifteen-story towering towering tower, above which the gradual high above will gradually become lower. If a picture of different levels of the scene, then choose a comprehensive moderate location for the dividing line, above the dividing line is high, the following is low. Depending on the level of the screen in the position of the height of the crop is the result of the frame, the two are not necessarily linked. As shown in Figure 1 and Figure 2, the actual assumption of the pole in the second figure is contour, then depending on the relationship between the horizon and pole, Figure 2 is higher than Figure 1 set. As seen from the position of the line of sight in the frame, Figure 1 is higher than Figure 2, which shows that there is no necessary link.