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By modern standards, nineteenth-century photography can appear rather primitive. While the stark black and white landscapes and unsmiling people have their own austere beauty, these images also challenge our notions of what defines a work of art.
Photography is a controversial fine art medium, simply because it is difficult to classify—is it an art or a science? Nineteenth century photographers struggled with this distinction, trying to reconcile aesthetics with improvements in technology.
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In photography, composition is the way of how elements are arranged to create the best shot. A good composition contributes to a nice photography. One example is street photography. In the streets, you can't control objects based on how you want them to be positioned. Instead, you anticipate for the objects to move in the exact spot on where you wanted them to be.
        
             
        
        
        
Answer:
Mixing red, white and blue primary colors will yield purple. 
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