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This same last night and, thanks to the planning of PhotoPills by Mario (@marribcor), we took a nautical walk with Columbus and the moon surrounded by their masts, as seen in this series of photographs in Readers' Photos from La Vanguardia.
The perspective and optical effect give us the impression that the finger of the Columbus monument on the Rambla is touching the crescent moon (illumination at midnight at 33.2%).
An optical illusion leads us to perceive reality in various ways. It may be physiological in nature, associated with the effects of excessive stimulation in the eyes or brain (brightness, color, movement, etc.).
Or also of a cognitive nature, in which our knowledge of the world intervenes (such as Rubin's vase in which we perceive two faces from the side or a vase indistinctly).
Many artists have taken advantage of optical illusions to give their works a magical appearance, depth, ambiguity and contrasts. Photography does not escape these types of effects, as we can see in this sequence of images.
