English: Focus stacked image (composed of 40 frames) of a Orthoceras sp. found in Erfoud, region of Tafilalt, Morocco. The 5.3 centimetres (2.1 in)-long horn belongs to an extinct genus of nautiloidcephalopods that lived in the Silurian period and is approx. 420 million years old.
Ceci est une image remarquable sur Wikimedia Commons (Featured pictures) et est considéré(e) comme l'une de nos meilleures images. Ceci est une image remarquable sur la Wikipédia en persan (نگارههای برگزیده) et est considéré(e) comme l'une de nos meilleures images.
NOTE : Cette image est une image focus stackée de Adobe Photoshop consistant en 47 images qui ont été fusionnées en utilisant le logiciel . En conséquence, cette image a subi une manipulation numérique pouvant inclure des ajustements de fondu, de flou, de clonage ainsi que des réglages de couleur et de perspective. À la suite de ces ajustements, le contenu de l'image peut être légèrement différent de la réalité aux points où les images ont été combinées. Cette manipulation est souvent nécessaire en raison de distorsions de la lentille, de la perspective et de la parallaxe.
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