Camara mandos14
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Presentación nº 4 - La cámara fotográfica: mandos, exposición, sensibilidad de película.
Para:Lic. en Comunicación Social / Tecnicatura Universitaria en Periodismo / Tecnicatura Universitaria en Publicidad y Propaganda
Integrantes de cátedra: Amalia Bruno / Ivana Nielson / Gabriela Lucero
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MANDOS PRINCIPALES DE LA CÁMARA RÉFLEX:
DIAFRAGMA:
f/1 - f/1,4 - f/2 - f/2,8 - f/4 - f/5,6 - f/8 - f/11 - f/16 - f/22 - f/32
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La PROFUNDIDAD DE CAMPO (PC) es la distancia, dentro de la escena que fotografiamos que aparece nítida, por delante y por detrás del punto donde enfoquemos.Controlando la profundidad de campo podremos determinar que planos de la escena aparecerán nítidos y cuales desenfocados.
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Mismo F 2,8 distinto punto de enfoque
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OBTURADOR:
1", 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000
Funciones de diafragma y obturador: REGULAN LA CANTIDAD DE LUZ PARA UNA BUENA EXPOSICIÓN FOTOGRÁFICA Y PROVOCAN CIERTOS EFECTOS EN LA IMAGEN.
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1", 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000
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SENSIBILIDAD DE LA PELÍCULA: Capacidad de una emulsión para reaccionar a la luz. Se denomina con la sigla ASA. La escala ASA (American Standard Asociation) es igual a la escala ISO (International Standard Office) que es la que se está imponiendo internacionalmente
ESCALA:
12 25 50 100 200 400 800 1600
Menos sensiblesMás durasMás lentas
Más sensiblesMas blandasMás rápidas
NORMAL
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EXPOSICIÓN FOTOGRÁFICARelación entre los 3 factores determinantes:
DIAFRAGMA
OBTURADORSENSIBILIDAD DE PELÍCULA
LEYDE
RECIPROCIDAD
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FOTO CON LUZ EQUILIBRADA
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FOTO SUB EXPUESTA
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Fuente: http://www.molinaripixel.com.ar/tendencias/2013/ley-de-reciprocidad/
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Fuente: http://fotografia.about.com/od/Exposicion_fotoyvideo/tp/Relacion-apertura-obturacion.htm
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Fuente: http://www.xatakafoto.com/guias/guia-visual-para-conocer-como-afecta-la-velocidad-de-obturacion-apertura-e-iso-a-las-fotos
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Diafragma:
f/1 - f/1,4 - f/2 - f/2,8 - f/4 - f/5,6 - f/8 - f/11 - f/16 - f/22 - f/32
Obturador:
1", 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000
ASAS/ sensibilidad:
12 25 50 100 200 400 800 1600
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Fotografías de Adriana Lestido “Madres e hijas"
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