Sigma 70mm f/2.8 DG Macro Art Lens for Sigma

Sigma 70mm f/2.8 DG Macro Art Lens for Sigma

$824.00
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PRODUCT ENQUIRY
  • SA-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/22
  • Two FLD Elements, Two SLD Elements
  • Low Dispersion and Aspherical Elements
  • Super Multi-Layer Coating
  • 1:1 Magnification, 10.2" Min. Focus
  • Coreless DC AF Motor, Manual Override
  • Weather-Sealed, Brass Bayonet Mount
  • Rounded 9-Blade Diaphragm
  • Compatible with Sigma USB Dock
  • Brand: Sigma   |    Code: 4271956
    APN: 0085126271565   |    Supplier Code: 271956

    Designed to minimize flare and ghosting

    From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. SIGMA’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions. The included lens hood can be attached to block out extraneous light, which can have a negative effect on rendering performance.

    4271956.feature.1.jpg
    4271956.feature.2.gif Diffraction MTF
    Geometrical MTF 4271956.feature.3.gif
    4271956.feature.4.gif

    Exclusive low-dispersion glass

    The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as “secondary spectrum” may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD (“F” Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.

    Rounded diaphragm

    The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.

    4271956.feature.5.jpg
     4271956.feature.6.jpg

    High-precision, rugged brass bayonet mount

    The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.

     

    4271956.overview.1.jpg

    The long-awaited first macro lens in the Art line

    The successor of the legendary, razor-sharp macro lens—
    the SIGMA MACRO 70mm F2.8 EX DG

    In recent years, macro lenses in the standard range have tended to employ inner focusing with the goal of maximizing autofocus speed. In contrast, the new SIGMA 70mm F2.8 DG MACRO | Art lens is designed to prioritize optical performance, fulfilling the demanding image quality requirements that define the Art line. In the standard to mid-telephoto range, it delivers stunning resolution and incredible clarity that greatly exceed expectations for a macro lens. The coreless DC motor further enhances image quality, while an optimized algorithm helps offer extremely smooth autofocus performance for a weightier, high-performance lens. Photography enthusiasts will recall a certain legendary, razor-sharp macro lens—the SIGMA MACRO 70mm F2.8 EX DG—and be glad to learn it is available in a new form, updated with outstanding Art line quality.

    4271956.overview.2.jpg

    Design prioritizing optical performance

    Top-level performance at every shooting distance

     In order to realize top-level performance at every shooting distance, the lens features an extending, floating, two-group focus mechanism. This configuration minimizes aberration to produce optimal results at any focus distance. To minimize axial chromatic aberration, the optical system incorporates two FLD glass elements, two SLD glass elements, and one element with a high rate of anomalous partial dispersion and a high index of refraction. In addition, two aspherical lens elements help increase resolution at close shooting distances. This optical system makes possible a razor-sharp in-focus area contrasted with a bokeh area free of color streaking.

    4271956.overview.3.jpg

    Focus-by-wire system for comfortable
    and precise focusing

    The focus-by-wire system eliminates the direct mechanical connection between the focus ring and the focus drive system. Controlled by SIGMA’s latest algorithm, a newly developed coreless DC motor adjusts focus with optimal speed and low noise. Full-time manual focus is available even during autofocus, allowing the photographer to make minute focus adjustments simply by turning the focus ring. In addition, the focus ring’s large angle of rotation helps the photographer achieve the extremely precise focusing required for effective macro photography.

    Fast AF with full-time manual focus

    Full-time manual focus function allows the lens to be switched to manual focus simply by rotating the focus ring.

    Note: The operation of full-time MF may vary based on mount type.

    Focal Length 70mm
    Aperture Maximum: f/2.8
    Minimum: f/22
    Camera Mount Type Sigma
    Format Compatibility 35mm Film / Full-Frame Digital Sensor
    Angle of View 34.3°
    Minimum Focus Distance 25.8 cm
    Magnification 1.0x
    Maximum Reproduction Ratio 1:1
    Optical Design 13 Elements in 10 Groups
    Diaphragm Blades 9, Rounded
    Autofocus Yes
    Filter Thread Front: 49 mm
    Dimensions (DxL) 70.8 x 105.8 mm
    Weight 515 g

     

  • Sigma 70mm f/2.8 DG Macro Art Lens for Sigma SA
  • LCF-49 III 49mm Lens Cap
  • Rear Cap LCR II for Sigma Mount Lenses
  • LH708-01 Lens Hood
  • Case
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    OVERVIEW

    4271956.overview.1.jpg

    The long-awaited first macro lens in the Art line

    The successor of the legendary, razor-sharp macro lens—
    the SIGMA MACRO 70mm F2.8 EX DG

    In recent years, macro lenses in the standard range have tended to employ inner focusing with the goal of maximizing autofocus speed. In contrast, the new SIGMA 70mm F2.8 DG MACRO | Art lens is designed to prioritize optical performance, fulfilling the demanding image quality requirements that define the Art line. In the standard to mid-telephoto range, it delivers stunning resolution and incredible clarity that greatly exceed expectations for a macro lens. The coreless DC motor further enhances image quality, while an optimized algorithm helps offer extremely smooth autofocus performance for a weightier, high-performance lens. Photography enthusiasts will recall a certain legendary, razor-sharp macro lens—the SIGMA MACRO 70mm F2.8 EX DG—and be glad to learn it is available in a new form, updated with outstanding Art line quality.

    4271956.overview.2.jpg

    Design prioritizing optical performance

    Top-level performance at every shooting distance

     In order to realize top-level performance at every shooting distance, the lens features an extending, floating, two-group focus mechanism. This configuration minimizes aberration to produce optimal results at any focus distance. To minimize axial chromatic aberration, the optical system incorporates two FLD glass elements, two SLD glass elements, and one element with a high rate of anomalous partial dispersion and a high index of refraction. In addition, two aspherical lens elements help increase resolution at close shooting distances. This optical system makes possible a razor-sharp in-focus area contrasted with a bokeh area free of color streaking.

    4271956.overview.3.jpg

    Focus-by-wire system for comfortable
    and precise focusing

    The focus-by-wire system eliminates the direct mechanical connection between the focus ring and the focus drive system. Controlled by SIGMA’s latest algorithm, a newly developed coreless DC motor adjusts focus with optimal speed and low noise. Full-time manual focus is available even during autofocus, allowing the photographer to make minute focus adjustments simply by turning the focus ring. In addition, the focus ring’s large angle of rotation helps the photographer achieve the extremely precise focusing required for effective macro photography.

    Fast AF with full-time manual focus

    Full-time manual focus function allows the lens to be switched to manual focus simply by rotating the focus ring.

    Note: The operation of full-time MF may vary based on mount type.

    FEATURES

    Designed to minimize flare and ghosting

    From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. SIGMA’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions. The included lens hood can be attached to block out extraneous light, which can have a negative effect on rendering performance.

    4271956.feature.1.jpg
    4271956.feature.2.gif Diffraction MTF
    Geometrical MTF 4271956.feature.3.gif
    4271956.feature.4.gif

    Exclusive low-dispersion glass

    The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as “secondary spectrum” may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD (“F” Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.

    Rounded diaphragm

    The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.

    4271956.feature.5.jpg
     4271956.feature.6.jpg

    High-precision, rugged brass bayonet mount

    The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.

     

    SPECIFICATIONS

    Focal Length 70mm
    Aperture Maximum: f/2.8
    Minimum: f/22
    Camera Mount Type Sigma
    Format Compatibility 35mm Film / Full-Frame Digital Sensor
    Angle of View 34.3°
    Minimum Focus Distance 25.8 cm
    Magnification 1.0x
    Maximum Reproduction Ratio 1:1
    Optical Design 13 Elements in 10 Groups
    Diaphragm Blades 9, Rounded
    Autofocus Yes
    Filter Thread Front: 49 mm
    Dimensions (DxL) 70.8 x 105.8 mm
    Weight 515 g

     

    IN THE BOX

  • Sigma 70mm f/2.8 DG Macro Art Lens for Sigma SA
  • LCF-49 III 49mm Lens Cap
  • Rear Cap LCR II for Sigma Mount Lenses
  • LH708-01 Lens Hood
  • Case
  • PROMOTIONS