{"id":673,"date":"2010-03-16T21:34:58","date_gmt":"2010-03-16T19:34:58","guid":{"rendered":"http:\/\/www.beseit.net\/?page_id=673"},"modified":"2013-10-04T19:28:41","modified_gmt":"2013-10-04T17:28:41","slug":"que-es-una-camera-fotografica","status":"publish","type":"page","link":"https:\/\/www.beseit.net\/?page_id=673","title":{"rendered":"Capitol 1: Qu"},"content":{"rendered":"

Es pot dir que una c\u00e0mera fotogr\u00e0fica \u00e9s una caixa fosca que deixa passar la llum el temps just perqu\u00e8 aquesta imprimeixi en una pel\u2022l\u00edcula, sensible a la llum, la imatge enfocada. Els elements m\u00e9s b\u00e0sics de la fotografia s\u00f3n la c\u00e0mera, el subjecte o objecte que es va a fotografiar i la llum existent. Existeixen m\u00e9s conceptes b\u00e0sics que s’aniran explicant a poc a poc en el curs.<\/p>\n

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La c\u00e0mera t\u00e9 un objectiu en un extrem que enfoca un raig de llum des del subjecte a la pel\u2022l\u00edcula. En l’altre extrem existeix un compartiment per a la pel\u2022l\u00edcula. Una obertura variable o diafragma, limita la grand\u00e0ria del raig de llum que penetra (obertura de diafragma). Un obturador controla el temps que la pel\u2022l\u00edcula est\u00e0 exposada a la llum (temps d’exposici\u00f3). S’observa l’escena a trav\u00e9s d’un visor. Per a triar el moment de l’exposici\u00f3 posse\u00efx un disparador.
\nLes c\u00e0meres tradicionals capturen la llum en una pel\u2022l\u00edcula fotogr\u00e0fica o placa fotogr\u00e0fica. Les c\u00e0meres digitals usen components electr\u00f2nics habitualment aquests s\u00f3n charge coupled device (CCD).<\/p>\n

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Es pot dir que una c\u00e0mera fotogr\u00e0fica \u00e9s una caixa fosca que deixa passar la llum el temps just perqu\u00e8 aquesta imprimeixi en una pel\u2022l\u00edcula, sensible a la llum, la imatge enfocada. Els elements m\u00e9s b\u00e0sics de la fotografia s\u00f3n … Continua llegint →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":678,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"categories":[1],"class_list":["post-673","page","type-page","status-publish","hentry","category-bloc-de-notes"],"_links":{"self":[{"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/pages\/673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beseit.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=673"}],"version-history":[{"count":9,"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/pages\/673\/revisions"}],"predecessor-version":[{"id":4667,"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/pages\/673\/revisions\/4667"}],"up":[{"embeddable":true,"href":"https:\/\/www.beseit.net\/index.php?rest_route=\/wp\/v2\/pages\/678"}],"wp:attachment":[{"href":"https:\/\/www.beseit.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beseit.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}