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Product Object ( [quesabesde] => 1 [descripcion_quesabesde] => [ciao] => 1 [descripcion_ciao] => DESCUENTO DE 93 EUROS PARA CANARIAS-Entrega en 24/48 horas – Tienda en Las Palmas de G.C. desde 1974 [ultimas_unidades] => 0 [promocion_mes] => 0 [dropshipping_only] => 0 [tax_name] => deprecated [tax_rate] => 0 [id_manufacturer] => 5 [id_supplier] => 0 [id_category_default] => 181 [id_shop_default] => 1 [manufacturer_name] => SIGMA [supplier_name] => [name] => SIGMA AF 20 F1.4 DG HSM ART (CANON) [description] =>

El primer objetivo ultra gran angular F/1,4 para cámaras full frame.

Perteneciene a la línea Art que ofrece un inigualable rendimiento expresivo.

Personalización y ajustes disponibles con el Sigma USB Dock (no incluidp).

La construcción del objetivo incluye dos elementos FLD (''F'' baja dispersión) y cinco elementos SLD (Especial baja dispersión) para reducir las aberraciones cromáticas.

Para ofrecer un objetivo ultra gran angular con una distancia focal de 20mm y una luminosidad F1.4, este objetivo incorpora una lente asférica doble* de 59mm de diámetro. Los objetivos de este tipo habían sido considerados extremadamente difíciles de producir, pero SIGMA aceptó el desafío de crear un objetivo ultra gran angular F1.4 que cumpliera con las exigencias de rendimiento de la línea SIGMA Art. 

Este objetivo minimiza las aberraciones cromáticas, un problema común en los objetivos gran angular de gran apertura. Dispone de dos elementos de cristal FLD “F” Baja Dispersión)* y cinco elementos de cristal SLD (Especial Baja Dispersión) para minimizar la aberración cromática transversal, que es resolución visible en los bordes de la imagen. La distribución optimizada de potencia del objetivo minimiza la aberración cromática axial. Como resultado, este objetivo ofrece una alta calidad de imagen en cada situación sin mezcla de colores, y ofrece un rendimiento nítido y de alto contraste.

La distorsión es un problema común en los objetivos gran angular, y no se puede corregir simplemente cambiando el valor de la apertura. Por esta razón, un objetivo debe ser diseñado para corregir esta aberración desde el inicio. Ajustando el ángulo de incidencia de la luz empezando con el primer elemento óptico e incorporando elementos asféricos de cristal posicionados de forma óptima, el objetivo SIGMA 20mm F1.4 DG HSM | Art minimiza la distorsión en toda la imagen.

[description_short] =>

DESCUENTO DE 93 EUROS PARA CANARIAS

  • Lente de montaje EF / formato de marco completo
  • Rango de apertura: f / 1.4 a f / 16
  • Dos elementos FLD y cinco elementos SLD
  • Dos elementos asféricos
  • Recubrimiento súper multi-capa
  • Motor Hyper Sonic AF, anulación manual
  • Diafragma de 9 cuchillas redondeado
  • Material TSC, Montaje de bayoneta de latón
  • Capucha de lente en forma de pétalo incorporada
  • Compatible con Sigma USB Dock

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SIGMA AF 20 F1.4 DG HSM ART (CANON)

ID de producto: 7002

EAN: 085126412548

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Más información

  • Lente de montaje EF / formato de marco completo
  • Rango de apertura: f / 1.4 a f / 16
  • Dos elementos FLD y cinco elementos SLD
  • Dos elementos asféricos
  • Recubrimiento súper multi-capa
  • Motor Hyper Sonic AF, anulación manual
  • Diafragma de 9 cuchillas redondeado
  • Material TSC, Montaje de bayoneta de latón
  • Capucha de lente en forma de pétalo incorporada
  • Compatible con Sigma USB Dock

More details

Garantía oficial 3 años.
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El primer objetivo ultra gran angular F/1,4 para cámaras full frame.

Perteneciene a la línea Art que ofrece un inigualable rendimiento expresivo.

Personalización y ajustes disponibles con el Sigma USB Dock (no incluidp).

La construcción del objetivo incluye dos elementos FLD (''F'' baja dispersión) y cinco elementos SLD (Especial baja dispersión) para reducir las aberraciones cromáticas.

Para ofrecer un objetivo ultra gran angular con una distancia focal de 20mm y una luminosidad F1.4, este objetivo incorpora una lente asférica doble* de 59mm de diámetro. Los objetivos de este tipo habían sido considerados extremadamente difíciles de producir, pero SIGMA aceptó el desafío de crear un objetivo ultra gran angular F1.4 que cumpliera con las exigencias de rendimiento de la línea SIGMA Art. 

Este objetivo minimiza las aberraciones cromáticas, un problema común en los objetivos gran angular de gran apertura. Dispone de dos elementos de cristal FLD “F” Baja Dispersión)* y cinco elementos de cristal SLD (Especial Baja Dispersión) para minimizar la aberración cromática transversal, que es resolución visible en los bordes de la imagen. La distribución optimizada de potencia del objetivo minimiza la aberración cromática axial. Como resultado, este objetivo ofrece una alta calidad de imagen en cada situación sin mezcla de colores, y ofrece un rendimiento nítido y de alto contraste.

La distorsión es un problema común en los objetivos gran angular, y no se puede corregir simplemente cambiando el valor de la apertura. Por esta razón, un objetivo debe ser diseñado para corregir esta aberración desde el inicio. Ajustando el ángulo de incidencia de la luz empezando con el primer elemento óptico e incorporando elementos asféricos de cristal posicionados de forma óptima, el objetivo SIGMA 20mm F1.4 DG HSM | Art minimiza la distorsión en toda la imagen.

 
ESPECIFICACIONES
Construcción del objetivo

15 elementos en 11 grupos
Ángulo de visión

94.5º
Núm. de láminas del diafragma

9 (diafragma circular)
Apertura mínima

F16
Distancia mínima de enfoque

27.6cm
Ampliación máxima

1:7.1
Dimensiones

Diámetro 90.7mm x longitud 129.8mm
Peso

950gr
Monturas AF

SIGMA / CANON / * NIKON * Las monturas Nikon no tienen anillo de diafragma. Algunas funciones pueden no funcionar dependiendo del modelo de cámara. ** Este objetivo no se puede utilizar con cámaras réflex analógicas, excepto la Nikon F6 y la Canon EOS-1v.
 
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