Nature photography is a wide range of photography taken outdoors and devoted to displaying natural elements such as landscapes, wildlife, plants, and close-ups of natural scenes and textures. Nature photography tends to put a stronger emphasis on the aesthetic value of the photo than other photography genres, such as photojournalism and documentary photography. 
Nature photos usually feature a subject such as a plant, animal or flower. This means that you need to separate that subject from the background of the frame.

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Nature