foto2016#4
TRANSCRIPT
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Presentación 4 - La cámara fotográfica
Lic. en Comunicación Social
Prof. Gabriela Lucero
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COMPACTA 35 MM
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FORMATO MEDIO
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GRAN FORMATO
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REFLEX DE DOS LENTES
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REFLEX DIGITAL
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PENTAPRISMAA- espejo reflex a 45ºB- Pantalla del visorC- PelículaD- Pentaprisma
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Pentaprisma y recorrido de la imagen
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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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ESCALA DE DIAFRAGMAS
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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
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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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Alta sensibiliad: mucho contraste: poca definición
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Baja ISO: menor contraste: mayor definición
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FOTO CON LUZ EQUILIBRADA
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FOTO SUB EXPUESTA
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PROFUNDIDAD DE CAMPO
Para una buena fotografía tener en cuenta:
- Una buena exposición (equilibrio de luz regulando diafragma-obturador y sensibilidad)
- -Un efecto que se logra modificando alguno de los mandos anteriores.
- ¿Qué exposición y efectos tiene esta fotografía?