Cloud cover and dust are also usually greatest during afternoon. Beware of days, when the weather forecast includes tightly spaced isobars. Special considerations apply to kite aerial photography at high-altitude . Lighting Completely clear to mostly sunny atmospheric conditions are a fundamental requirement for all types of aerial photography. The reasons for this are two fold.
Shadows are an important element in aerial photography.
Shadows create a 3-dimensional effect that helps for identification of ground features. Sharply defined shadows aid in recognition of objects that may appear unfamilar when viewed from above, and shadows may indicate the heights or slopes of features. Lighting conditions include many factors beyond the presense or absence of clouds. The direction of photography in relation to the sun is another important variable to take into account. This provides for good illumination and some shadowing.