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Posts Tagged ‘70mm’

DPReview TV: Sigma 70mm F2.8 Macro Art lens review

05 Jan

This week on DPReview TV, Chris and Jordan test Sigma’s latest macro lens, the 70mm F2.8 DG Macro Art. Find out why they like it in this uniquely Canadian presentation.

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  • Introduction
  • Focus by Wire
  • Close Focus Distance
  • Size vs Stabilization
  • Focal Length Advantages
  • Autofocus Performance
  • Lack of Stabilization vs Competition
  • Wrap-up

Sample gallery from this episode:

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Articles: Digital Photography Review (dpreview.com)

 
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Sigma 14mm F1.8, 135mm F1.8, and 70mm F2.8 macro Art lenses for Sony E-Mount now shipping

10 Aug

Sigma is now shipping the 14mm F1.8 DG HSM, 70mm F2.8 DG MACRO, and 135mm F1.8 DG HSM Art lenses for Sony E-mount full-frame cameras that were announced in February. All three lenses support Sony’s Continuous AF and high-speed autofocus, as well as in-camera lens aberration correction and image stabilization.

According to Sigma, the brass bayonet on each lens features special surface treatment designed to improve the mount strength. The mount is joined by a rubber seal to protect against splashes and dust. In addition, Sigma says its E-mount models include a newly developed control algorithm that both maximizes data transmission speeds and optimizes the autofocus drive.

All three E-mount lenses are available from retailers now at the following prices:

  • 14mm F1.8 DG HSM: $ 1599 USD
  • 70mm F2.8 DG MACRO: $ 569 USD
  • 135mm F1.8 DG HSM: $ 1399 USD

Articles: Digital Photography Review (dpreview.com)

 
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Sigma’s 70mm F2.8 DG Macro Art lens costs $570, ships this month

12 May

Back in February, Sigma introduced the first Macro lens to join the company’s high-end line of “Art” series lenses: the Sigma 70mm F2.8 DG MACRO Art. And today, after keeping us in the dark for a few months, the company has finally revealed the lens’ pricing and availability.

According to Sigma, you’ll be able to pick up the new lens in Canon EF mount starting at the end of this month for a suggested retail price of $ 570. Additionally, the Sigma mount is expected to ship in June, and the Sony E-Mount version “will be announced later.”

As we mentioned above, this 70mm F2.8 is the first macro lens to join Sigma’s “Global Vision Art Line,” a lineup of lenses touted for its exceptional optical quality (usually at a very reasonable price). The new MACRO Art is said to deliver “stunning resolution and incredible clarity, while at the same time offering extremely smooth autofocus performance for a weightier, high-performance lens.”

In order to achieve this “extremely smooth” AF performance, Sigma has equipped the lens with an extending, floating, two-group focusing mechanism that the company says “minimizes aberration at all focal lengths,” whether you’re shooting at 1:10, 1:5, or the maximum magnification ratio of 1:1. Additionally, a new focus-by-wire system paired with a newly-developed “coreless DC motor” promises precise focusing—a must for macro shooters.

To learn more about this lens, head over to the Sigma website.

Press Release

Sigma Announces Pricing & Availability for Its 70mm F2.8 DG MACRO Art Lens

Ronkonkoma, NY – May 11, 2018 – Sigma Corporation of America, a leading still photo and cinema lens, camera, flash and accessory manufacturer, today announced that its 70mm F2.8 DG MACRO Art, the first prime macro lens to be adorned with the Art badge, will be available in Canon mount in the end of May for $ 569.00 USD through authorized US retailers. The Sigma mount model is expected to ship in June. The release of the Sony E-Mount version will be announced later.

The First Macro Lens in the Sigma Global Vision Art Line

Elevating the legendary Sigma 70mm F2.8 EX DG to the Art line, the brand new Sigma 70mm F2.8 DG MACRO Art prioritizes optical performance that defines the Sigma Art line, delivering stunning resolution and incredible clarity, while at the same time offering extremely smooth autofocus performance for a weightier, high-performance lens.

To achieve optimal results at every shooting distance, the lens features an extending, floating, two-group focus mechanism, which minimizes aberration at all focal lengths. In addition, the lens’ optical elements design increases resolution at close shooting distances, allowing for a razor-sharp in-focus area contrasted with a bokeh area free of color streaking.

Other feature highlights include focus-by-wire system featuring newly developed coreless DC motor for comfortable and precise focusing typically required for macro photography; compatibility of the Canon mount lens with the Canon Lens Aberration Correction function; and compatibility with Sigma Electronic Flash Macro EM-140 DG and Sigma Teleconverters.

Full technical specifications can be found on the Sigma website at: https://www.sigmaphoto.com/70mm-f2-8-dg-macro-a.

Articles: Digital Photography Review (dpreview.com)

 
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CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’ & 70mm macro

01 Mar

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

Sigma’s new 105mm F1.4 DG HSM is a beast, weighing in at 1.6 kilos. We’re at the CP+ tradeshow in Yokohama, Japan, where we just got our hands on what Sigma is calling the ‘bokeh master’.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

Even without the hood, the new 105mm is a large lens, with a front filter diameter of 105mm. It’s not particularly long, but as you can see from this shot, which shows the lens mounted on a Canon EOS 6D, it has a very wide diameter of 116mm (4.6 inches). The large tripod ring is included, and can be removed for hand-held shooting.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

With the hood attached, the 105mm gets even larger.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

The new 105mm is unstabilized, which means that the only controls on the lens are an AF/MF switch and a very broad, wide-diameter focus ring. Manual focus is a luxurious experience on all of Sigma’s ‘Art’ series and this lens is no different. Judging purely from our brief experience on the show floor, autofocus speed is similar to the 85mm F1.4: smooth and positive without being as quick and snappy as lenses with fewer pieces of glass to move around.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

And there is a lot of glass inside the 105mm. The new lens comprises 17 elements in 12 groups, including three FLD glass elements, two SLD glass elements, and one aspherical element.

Sigma claims that the lens creates a beautiful bokeh effect, and the well-controlled sagittal coma should make it excellent for capturing ‘starry skies’. A 105mm wouldn’t be our first choice for astrophotography, but we can’t wait to get hold of a shootable sample, and see what it can do.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

Also unveiled at the show was a new macro lens, – a first for the Art range. The 70mm F2.8 DG Macro offers true 1:1 reproduction, and a dust and splash-proof construction.

The lens features an extending, floating, two-group focus mechanism. Optical construction 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’. This should minimize axial chromatic aberration. Sigma claims that two aspherical elements ensure ‘razor-sharp’ images at close focusing distances.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

The 70mm macro is a pretty compact short-tele lens when focused at infinity, but gets bigger when the included hood is attached. The front filter diameter is a modest 49mm. Three focus limits can be set, for reducing autofocus ‘hunting’ at short working distances.

CP+ 2018: Hands-on with Sigma 105mm F1.4 Art ‘bokeh master’

When the lens is racked to its minimum focus distance of 26cm (10.2 inches) the lens itself grows considerably in size (but the hood stays put). Focus is ‘focus by wire’.

At 515g (18 oz) it’s reasonably lightweight, and balances well on our A7R III (with an adapter). We got our hands on a Canon-mount version, but the 70mm F2.8 is also available in Sony FE mount natively.

Articles: Digital Photography Review (dpreview.com)

 
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Sigma introduces 70mm F2.8, first Art series macro

27 Feb

Gearing up for CP+ 2018, Sigma has announced two all-new lenses including the 70mm F2.8 DG Macro. It’s the first macro lens in the Art-series line, offering true 1:1 reproduction and a dust- and splash-proof design. Full-time manual focus is available even in autofocus shooting, and focus ring’s angle of rotation is tuned to the needs of macro shooting. Sigma gives no pricing or availability information for the 70mm F2.8 Macro.

SIGMA 70mm F2.8 DG MACRO

Stunning resolution and clarity for a breathtaking visual experience—a razor-sharp macro lens joins the Art line

1. Design prioritizing optical performance

2. Focus-by-wire system for comfortable and precise focusing

3. Compatible with Sony E-mount cameras with full-size sensors

4. Compatible with Canon Lens Aberration Correction

5. Compatible with SIGMA ELECTRONIC FLASH MACRO EM-140 DG (adapter required)

6. Compatible with SIGMA TELE CONVERTERS (Not available for Sony E-mount lens) Launch: TBD Accessory: Case, Hood (LH708-01) Available AF mounts: SIGMA, Canon, Sony E-mount Note: Appearance and specifications are subject to change without notice.

The long-awaited first macro lens in the Art line 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.

Key features
1. Design prioritizing optical performance 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.

2. 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.

3. Compatible with full-frame Sony E-mount cameras The version of this lens compatible with Sony E-mount mirrorless cameras contains the same optical system as for SLRs. SIGMA MOUNT CONVERTER MC-11 is not required, as the lens performs the same functions as the converter, including in-camera image stabilization and in-camera lens aberration correction. In addition, the lens is compatible with Sony’s Continuous AF, which is not addressed by MOUNT CONVERTER MC-11. SIGMA plans to offer over time Sony E-mount versions of every full-frame prime lens currently available in the Art line, from 14mm to 135mm.

Note: This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.

4. Compatible with Canon Lens Aberration Correction The Canon mount lens is compatible with the Canon Lens Aberration Correction function.* Matching the optical characteristics of the lens, this function performs in-camera corrections of peripheral illumination, chromatic aberrations, distortion, and more, further enhancing image quality. *Function not available on all Canon cameras. Further, available corrections may vary by Canon camera model.

5. Compatible with ELECTRONIC FLASH MACRO EM-140 DG (adapter required) Exclusively for SIGMA 70mm F2.8 DG MACRO | Art, the 65mm MACRO FLASH ADAPTER makes the lens compatible with ELECTRONIC FLASH MACRO EM-140 DG (both accessories sold separately). Thanks to the 72mm filter thread, a 72mm MACRO FLASH ADAPTER can also be added so as to accommodate 72mm macro flash products and accessories, including macro flashes other than EM-140 DG as well as ring lights.

6. Compatible with SIGMA TELE CONVERTERS The lens is compatible with SIGMA TELE CONVERTERS (sold separately) designed for the company’s new lens lines. SIGMA TELE CONVERTER TC-1401 allows the lens to be used as a 98mm F4 mid-telephoto macro with autofocus functionality,* while SIGMA TELE CONVERTER TC-2001 allows the lens to be used as a 140mm F5.6 mid-telephoto macro with manual focus.
*Autofocus available at 0.5m to infinity.
*Not available for Sony E-mount lens

Other features

  • Mount with dust- and splash-proof design*
    *SIGMA mount lens does not include sealing, since sealing is present on compatible SIGMA cameras.
  • Rounded diaphragm
  • Fast AF with full-time manual override*
    * The operation of full-time MF may vary based on mount type.
  • Compatible with SIGMA MOUNT CONVERTER MC-11*
    *SIGMA and Canon mount lenses
  • Available SIGMA USB DOCK makes customization and flexible adjustment possible*
    *Not available for Sony E-mount lens
  • Available Mount Conversion Service
  • Brass bayonet mount
  • Evaluation with SIGMA’s own MTF measuring system: A1
  • “Made in Japan” with outstanding craftsmanship

For more information about the SIGMA GLOBAL VISION lineup of fine products, please visit the official SIGMA global website: SIGMA GLOBAL VISION: http://www.sigma-global.com

Specifications
All figures calculated for SIGMA

Lens Construction: 13 elements in 10 groups | Angle of view (35mm): 34.3° | Number of diaphragm blades: 9 (rounded diaphragm) | Minimum aperture: F22 | Minimum focusing distance: 25.8cm/10.2in. | Maximum magnification ratio: 1:1 | Filter size: ø 49mm| Dimensions (diameter x length): ø70.8mm x 105.8mm/2.8in. x 4.2in. | Weight: 515g/18.2oz.

Articles: Digital Photography Review (dpreview.com)

 
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