These photos are part of a series by Ori Gersht called 'Rear Window'. The pictures are taken without filters or manipulation and document the skies above London, including all the optical effects cause by the air pollution. 

"The series calls into question our familiarity with our own natural habitat, pointing out the gulf between the sky that we believe we know, and that of the photographs: a gap between the mechanical, attentive and unassumptive vision of the camera, and the presumptive and subjective vision of the human eye."

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