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{"id":952337,"date":"2017-05-29T11:40:21","date_gmt":"2017-05-29T09:40:21","guid":{"rendered":"https:\/\/www.phonandroid.com\/?p=952337"},"modified":"2022-09-21T17:01:56","modified_gmt":"2022-09-21T15:01:56","slug":"double-camera-quel-interet","status":"publish","type":"post","link":"https:\/\/www.phonandroid.com\/double-camera-quel-interet.html","title":{"rendered":"Double capteur photo sur smartphone : \u00e0 quoi \u00e7a sert et quels sont les avantages ?"},"content":{"rendered":"

LG G6, Honor 8, iPhone 7 Plus…La plupart des mod\u00e8les haut de gamme proposent d\u00e9sormais la double cam\u00e9ra ou “dual camera” dans la langue de Shakespeare. L'annonce m\u00eame suffit \u00e0 faire briller des \u00e9toiles dans les yeux des amateurs de photo. Mais quels sont les v\u00e9ritables avantages ? Quels sont les meilleurs t\u00e9l\u00e9phones \u00e9quip\u00e9s de cette fonction ? On fait le point pour vous.\u00a0<\/strong><\/p>\n

\"test<\/p>\n

C'est quoi exactement la double cam\u00e9ra ?<\/h2>\n

Savez-vous quand est apparue la premi\u00e8re double cam\u00e9ra sur un smartphone ? Ce n'est pas aussi r\u00e9cent qu'on pourrait le penser. En effet, c'est le HTC M8<\/a> qui, d\u00e8s 2014, l'a propos\u00e9. La marque s'appuyait alors sur la technologie Ultrapixel<\/strong> pour proposer un objectif principal de 4 m\u00e9gapixels et un second de 2 m\u00e9gapixels calculant la profondeur de champ.\u00a0Le mouvement a ensuite pu acc\u00e9l\u00e9rer avec le d\u00e9ploiement du Snapdragon 810.<\/p>\n

Bien entendu, depuis, les choses ont beaucoup \u00e9volu\u00e9 d'un point de vue de la qualit\u00e9 des capteurs. Mais le concept reste le m\u00eame. Le premier objectif a un fonctionnement tr\u00e8s classique. Il prend une image en couleur de la meilleure fa\u00e7on possible. C'est sur le second objectif que se fait la diff\u00e9rence. Il sert \u00e0 accumuler des informations suppl\u00e9mentaires, notamment d'un point de vue de la profondeur de champ. Mais ensuite, selon les marques la strat\u00e9gie et l'objectif principal change. Parfois, il servira \u00e0 ajouter un effet fish-eye, le mode bokeh ou encore “temps de vol”<\/strong>.<\/p>\n

Le plus int\u00e9ressant c'est que l'on est encore aux pr\u00e9mices de ce qui devrait \u00eatre un v\u00e9ritable bouleversement.<\/p>\n

A court terme, il appara\u00eet de plus en plus probable que les syst\u00e8mes \u00e0 double capteur photo am\u00e8neront la photographie mobile au-del\u00e0 de ses limites actuelles. Quand la technologie des processeurs \u00e0 un coeur a atteint la limite de sa vitesse, les coeurs ont \u00e9t\u00e9 am\u00e9lior\u00e9s et finalement multipli\u00e9s. La m\u00eame strat\u00e9gie semble devoir s'appliquer aux appareils photo des smartphones.<\/em>\u00a0–\u00a0The Verge<\/a>\u00a0–<\/p>\n