Conceptos de fotografía

De qué manera la configuración de apertura, la velocidad del obturador y la sensibilidad ISO controla la exposición

La configuración de apertura, la velocidad del obturador y la sensibilidad ISO están íntimamente relacionadas en fotografía. La configuración de apertura permite controlar la apertura que regula el ingreso de luz a la cámara, mientras que la velocidad del obturador determina la cantidad de tiempo que este permanece abierto para que entre la luz. La sensibilidad ISO determina la velocidad con la que la película reacciona por la acción de la luz. En conjunto, estos tres aspectos se describen como el triángulo de exposición.

Cualquier cambio que se produzca en la velocidad del obturador, el valor de apertura o la sensibilidad ISO puede compensarse ajustando otros componentes con el fin de mantener la cantidad de luz. Sin embargo, los resultados cambiarán en función de los ajustes. Por ejemplo, la velocidad del obturador es útil para expresar movimiento, la apertura permite controlar la profundidad del campo y la sensibilidad ISO permite definir la textura de la fotografía.

Ajustes

Resultados

Ajustes

Resultados

Velocidad del

Velocidad alta

= menos luz

obturador

Velocidad baja

 

= más luz

Rápida = sin movimiento

Lenta = borroso

Sensibilidad

Sensibilidad alta

= más sensible a la luz

ISO

Sensibilidad baja

 

= menos sensible a la luz

Alta = más borrosa

Baja = menos borrosa

Valor de apertura

Apertura amplia

=más luz Apertura angosta

=menos luz

Amplia = poca profundidad de campo

Angosta = mucha profundidad de campo

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Samsung EV-NX300ZBSVIL, EV-NX300ZBQUPT, EV-NX300ZBUTES manual Velocidad del, = menos luz, Obturador, = más luz, Sensibilidad

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