Different shapes of lens, vintage engraving - Vintage Nostalgia
Different shapes of lens, vintage engraving

Optical devices: lens of different shapes, XIX century engraving

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Reproduction of a stereoscopic image, vintage engraving - Vintage Nostalgia
Reproduction of a stereoscopic image, vintage engraving

Stereoscopic image known as stereogram , created to enhance the illusion of depth with binocular vision, vintage engraving

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