"I wanted to photograph clouds to find out what I had learned in forty years about photography. Through clouds to put down my philosophy of life – to show that (the success of) my photographs (was) not due to subject matter – not to special trees or faces, or interiors, to special privileges – clouds were there for everyone..." Alfred Stieglitz
The Equivalents were intended to void of all signs or symbols of interpretation and so are considered the first truly abstract photographs.
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The idea of creating a photograph that is purely and solely a depiction of sensation is a life time ambition. Still trying -