Séduction optique chez les oiseaux
Futura Sciences a un article à lire, intitulé Séduire grâce à une illusion d’optique, c’est possible chez les oiseaux. Recommandé pour se changer les idées.
This is the title of a 17th Century French book whose illustrations instruct the artist about the basics of perspective. The very first steps to a good optical illusion.
Japanese artist Nagai Hideyuki drawings in 3D quickly become optical illusion. DeviantArt gallery and website.
120 years ago, MC Escher was born.
Photos are from Ronny Ternes. More of these on DIYPhotography.net