Objetiva Sigma 50mm f/1.4 DG HSM Art Lens p/ Canon EF

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A lente Sigma 50mm f/1.4 DG HSM Art Lens para Canon EF é desenhada em alto padrão para atingir alta performance óptica através da incorporação de 3 especiais cristais de baixa dispersão e 1 elemento asférico para corrigir distorções.

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A lente Sigma 50mm f/1.4 DG HSM Art Lens para Canon EF é desenhada em alto padrão para atingir alta performance óptica através da incorporação de 3 especiais cristais de baixa dispersão e 1 elemento asférico para corrigir distorções.

Este elementos juntamente com um avançada design de óptica trabalham para minimizar Sagittal Coma Flare e aberrações cromáticas, proporcionando alta nitidez e claridade. O largo diâmetro das lentes e o sistema de flutuação também ajudam a corrigir possíveis vinhetas, mantendo o brilho nas extremidades periféricas. Um Super Multi Coating foi aplicado aos elementos também afim de eduzir Flare E efeito Ghosting para obter alto contraste e fidelidade de cor.

O HSM Hyper Sonic Motor incrementado com um AF algorítmo, produz suave e silenciosos ajustes e rápida performance de foco para utilizar as lentes em uma ampla variedade de situações. O motor auto-foco também permite em tempo integral certo controle de foco manual para um ajuste fino de precisão simplesmente acionando o anel de foco em qualquer situação.

Sigma Global Vision - Art 

As part of the Art line within Sigma's Global Vision series, this lens' is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
Molded Glass Aspherical Element 
This lens has been designed using an advanced optical structure to achieve both high resolution and sharpness along with an aesthetic out-of-focus quality for greater subject separation. A molded glass aspherical element corrects for sagittal coma flare and enables full use of the fast f/1.4 maximum aperture with maintained sharpness and clarity. This design also works to minimize vignetting, color blur, and other distortions help to produce natural and pleasing bokeh for selective focus and shallow depth of field techniques. By reducing these aberrations, this lens is also well-suited to astrophotography or other situations with point-light sources due to its ability to suppress blur near the edges of the frame.
Special Low Dispersion Glass Elements 
Three SLD (Special Low Dispersion) glass elements have been incorporated within the lens design to correct for axial chromatic aberration throughout the entire focusing range. This helps to ensure maintained image sharpness, clarity, and contrast regardless of focus point or aperture setting.
Large Diameter Lens 
In designing the lens with a large 85.4mm diameter, and placing the widest elements within the front group, greater peripheral brightness is more easily attained when working with larger apertures. This design also lends itself to minimizing vignetting throughout the aperture range for greater clarity and detail across the image frame.
Super Multi-Layer Coating 
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
Floating System 
By employing a floating system, the distance between glass elements is adjusted during focusing in order to limit the amount of lens movement required when shooting. This floating system helps to realize a minimum focusing distance of 1.3' with a maximum magnification of 1:5.6. Additionally, this design also contributes to high detail rendering capabilities throughout the entire focusing range.
Hyper Sonic AF Motor 
The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
Other Lens Features 
  • A rounded nine-blade diaphragm helps to produce an attractive out-of-focus quality.
  • The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations. The outside of the lens barrel is also engraved with the year of production.
  • The bayonet mount is constructed from brass for ensured accuracy and durability.
  • The included lens hood is fitted with a rubber connection for a secure fit.
  • This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.



ESPECIFICAÇÕES

 

Performance

Focal Length   50mm

Aperture          Maximum: f/1.4

Minimum: f/16

Camera Mount Type   Canon EF

Format Compatibility35mm Film / Full-Frame Digital Sensor

Angle of View46.8°

Minimum Focus Distance       1.31' (40 cm)

Maximum Reproduction Ratio           1:5.6

Elements/Groups       13/8

Diaphragm Blades      9, Rounded

Features

Autofocus        Yes

Physical

Filter Thread   Front: 77 mm

Dimensions (DxL)        Approx. 3.36 x 3.93" (85.4 x 99.9 mm)

Weight            1.79 lb (815 g)

Packaging Info

Package Weight          2.6 lb

Box Dimensions (LxWxH)       7.1 x 4.8 x 4.7"

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Objetiva Rokinon Cine DS 24mm T1.5 para Montagem EF Canon 

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