A Sea of Steps by Frederick Henry Evans.
this was an early example of the photography movement known as Straight Photography and as a departure from Pictorialism. Straight Photography practitioners attempted to depict scenes/subjects in sharp focus, with high contrast, and high detail. it emphasized the technical capabilities of the camera.
Vortograph is considered to be one of the first abstract photographs. Coburn constructed a kaleidoscopic contraption and photographed through triangularly clamped mirrors to create the abstract images. this abstraction of photgraphy was a reaction to the notion that photography was incapable of abstraction and only good for capturing "real" life.