航空摄影比例尺的选擇,主要是根据工作的目的和要求而定。在地質工作中除考虑工作的要求(保証能看清主要的地質、地貌等客体)以外,还要考虑到准备进行攝影地区的自然条件。在地質测量中,如進行小比例尺1:1,000,000—1:500,000的地質填圖,在地質構造簡單的地区,航空照片的比例尺以采用1:50,000—1:60,000为宜,对复雜的地区則以1:25,000—1:30,000的比例尺比较合 The choice of aerial photography scale is mainly based on the purpose and requirements of the work. In geological work, besides considering the work requirements (to ensure that we can see the main geology, geomorphology and other objects), it is also necessary to consider the natural conditions for preparing the area for photography. For geological surveys, for geological mapping with small scales of 1: 1,000,000-1: 500,000, the scale of aerial photographs should be 1: 50,000-1: 60,000 in areas with simple geological structure, while in complex areas Compare with 1: 25,000-1: 30,000 scale