Original sentence: Additionally, there is a natural kinship between aerial landscape painting and abstract painting, not only because familiar objects are sometimes difficult to recognize when viewed aerially, but because there is no natural "up" or "down" orientation in the painting: often it seems that, as in a work of abstract expressionism, the painting might just as well be hung upside down or sideways.In his view, both air travel and — especially — aerial photography had created this broad change in consciousness
Edited sentence: Additionally, there is a natural kinship between aerial landscape painting and abstract painting, not only because familiar objects are sometimes difficult to recognize when viewed aerially, but because there is no natural "up" or "down" orientation in the painting.In his view, air travel, and more specifically, aerial photography had created this broad change in consciousness.Often it seems that, as in a work of abstract expressionism, the painting might just as well be hung upside down or sideways