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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 announces nine full-frame E-mount Art primes

28 Feb

Sigma has announced plans to bring seven of its existing full-frame Art-series primes, plus two newly-announced lenses, to E-mount. Sigma says that the E-mount versions will offer “a newly developed control algorithm that optimizes the autofocus drive and maximizes the data transmission speed.” The lenses will work with Sony’s AF-C mode, and as with existing lenses adapted via MC-11, will work with in-camera stabilization and in-camera lens corrections.

Below are the lenses Sigma plans to offer in E-mount:

  • 14mm F1.8 DG HSM | Art
  • 20mm F1.4 DG HSM | Art
  • 24mm F1.4 DG HSM | Art
  • 35mm F1.4 DG HSM | Art
  • 50mm F1.4 DG HSM | Art
  • 70mm F2.8 DG Macro | Art
  • Sigma 85mm F1.4 DG HSM | Art
  • Sigma 105mm F1.4 DG HSM | Art
  • Sigma 135mm F1.8 DG HSM | Art

Sigma says that launch dates for all models are yet to be determined.

SIGMA launches seven interchangeable Art prime lenses for Sony E-mount cameras with full-frame sensors

SIGMA Corporation is pleased to announce the upcoming launch of interchangeable lenses for the Sony E-mount digital camera series with full-frame image sensors. SIGMA will gradually introduce the lenses as members of the Art line, which offers photographers the highest level of optical performance.

While offering the same high-performance optical design as other lenses in the Art line, the new Sony E-mount models will feature a newly developed control algorithm that optimizes the autofocus drive and maximizes the data transmission speed. In addition, these lenses will be compatible with Sony’s Continuous AF (AF-C) and high-speed autofocus, which are not addressed by SIGMA MOUNT CONVERTER MC-11. Like the converter MC-11, the lenses will be compatible with in-camera image stabilization and in-camera lens aberration correction, which includes corrections for peripheral illumination, chromatic aberrations, and distortion.

The lineup will include the Art line set of seven prime lenses covering 14mm to 135mm. It will also include two models that SIGMA will be exhibiting at CP+ 2018: 70mm F2.8 DG MACRO | Art and 105mm F1.4 DG HSM | Art (launch date TBD). Further, SIGMA plans to introduce additional Sony E-mount models in the Art line going forward.

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.

Key features

1. Autofocus tuned for each lens
Thanks to an autofocus drive control program tuned for each lens and high-speed data transmission, the lenses will offer high-speed autofocus at the same performance level as that of a lens designed exclusively for mirrorless cameras. In particular, in E-mount cameras offering Sony’s Fast Hybrid AF, AF-C mode will deliver exceptional subject following performance. Moreover, autofocus will remain extremely precise even in those E-mount cameras offering only contrast AF.

2. Compatible with in-camera image stabilization
The lenses will be compatible with in-camera image stabilization. The Sony E-mount camera senses the focal length of the lens and automatically optimizes image stabilization performance.

3. Data loaded for compatibility with in-camera aberration correction The lenses will be fully compatible with in-camera aberration correction, which includes corrections for peripheral illumination, chromatic aberrations, and distortion. By matching corrections to the optical characteristics of the lens, this function takes image quality to an even higher level.

4. Native mount for a more rigid and stable feel Making the mount native to the lens makes possible a more rigid and stable feel to the lens. Featuring a special surface treatment to enhance strength, the brass bayonet mount offers a high-precision fit and exceptional durability. The mount connection area incorporates rubber sealing for dust- and splash-proof construction.

5. Available Mount Conversion Service This service converts the mount of SIGMA lenses to that of a different camera body, allowing photographers to continue using their favorite lenses over the long term regardless of camera system.

Note 1: The Mount Conversion Service is different from a normal repair. In order to apply for the service, please contact your nearest authorized SIGMA subsidiary or distributor. http://www.sigma-global.com/en/about/world-network/

Note 2: This service is performed exclusively by SIGMA.

Product lineup

SIGMA 14mm F1.8 DG HSM | Art
Launch date: TBD. Includes case

SIGMA 20mm F1.4 DG HSM | Art
Launch date: TBD. Includes case

SIGMA 24mm F1.4 DG HSM | Art
Launch date: TBD. Includes case and hood

SIGMA 35mm F1.4 DG HSM | Art
Launch date: TBD. Includes case and hood

SIGMA 50mm F1.4 DG HSM | Art
Launch date: TBD. Includes case and hood

SIGMA 70mm F2.8DG MACRO | Art (CP+ 2018 exhibit)
Launch date: TBD. Includes case and hood

SIGMA 85mm F1.4 DG HSM | Art
Launch date: TBD. Includes case and hood

SIGMA 105mm F1.4 DG HSM | Art (CP+ 2018 exhibit)
Launch date: TBD. Include case, hood, and tripod socket

SIGMA 135mm F1.8 DG HSM | Art
Launch date: TBD. Includes case and hood

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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Sigma unveils 105mm F1.4 Art ‘bokeh master’

27 Feb

The Sigma 105mm F1.4 DG HSM is the longest F1.4 lens in the Art series to date, comprising 17 elements in 12 groups. It is, of course, dust- and splash-resistant, and includes an Arca-Swiss tripod collar. Sigma boasts that the 105mm delivers ‘unsurpassed F1.4 performance’ and ‘exceptional peripheral brightness.’ No pricing or availability is given at announcement.

SIGMA 105mm F1.4 DG HSM

Introducing the “bokeh master”—featuring incredible resolution and designed for full-frame sensors, this is the longest focal length of the Art line’s F1.4 lenses

1. Optical system delivering unsurpassed F1.4 performance

2. Exceptional peripheral brightness

3. Professional specifications

4. Ease-of-use specifications

5. Compatible with full-frame Sony E-mount cameras

6. Compatible with Canon Lens Aberration Correction Launch: TBD Accessory: Case, Cover Hood (LH1113-01), tripod socket (TS-111), protective cover (PT-21) Available AF mounts: SIGMA, Nikon, Canon, and Sony E-mount Note: Appearance and specifications are subject to change without notice.

Leading the way in F1.4 brightness
Since introducing its first SIGMA Global Vision F1.4 lens in 2012, the 35mm F1.4 DG HSM | Art, SIGMA has been adding wide-aperture F1.4 options to the lineup. Now, with the introduction of the new 105mm F1.4 DG HSM | Art, SIGMA offers a total of nine lenses with F1.4 brightness, including six for full-frame cameras and three for APS-C cameras. SIGMA has designed all of these lenses to offer minimal optical aberration and deliver incredible resolution and stunning contrast. Boasting the longest focal length of the F1.4 Art line lenses, the new lens combines outstanding resolution with a beautiful bokeh effect. Designed with great care to ensure that both the in-focus and out-of-focus areas of the photograph are equally satisfying to the eye, this lens is truly a “bokeh master.” The SIGMA 105mm F1.4 DG HSM | Art has earned its place as the flagship of the F1.4 Art line lenses, prioritizing image quality above all to fulfill the promise of the line, delivering truly amazing optical performance.

Key features

1. Optical system delivering unsurpassed F1.4 performance
In order to combine outstanding wide-aperture, mid-telephoto performance with F1.4 brightness at maximum aperture, this lens incorporates 17 optical elements in 12 groups—an uncommonly large number of elements for a prime lens. By including three FLD glass elements, two SLD glass elements, and one aspherical lens element, the optical system minimizes axial chromatic aberration to deliver extremely high resolution along with ample peripheral light volume. The area in focus is extremely sharp, while the area out of focus features a beautiful bokeh effect with highly natural colors, making this lens a powerful choice for portrait photography. The optical system also minimizes sagittal coma flare, making this lens excellent for capturing starry skies.

2. Exceptional peripheral brightness
The most effective method of ensuring ample light is to maximize the diameter of the first element of the optical system. With its large filter diameter of 105mm, the SIGMA 105mm F1.4 DG HSM | Art delivers a significantly greater volume of peripheral light than other lenses in its class. Minimizing vignetting while offering a beautiful bokeh effect, this lens is ideal for portrait photography.

3. Professional specifications
Like SIGMA’s Sports line lenses, the 105mm F1.4 DG HSM | Art features a highly effective dust- and splash-proof structure with special sealing at the mount connection*, manual focus ring, cover connection, and other areas, allowing photographers to work in all types of weather. In addition, the front of the lens is protected by a water- and oil-repellent coating that makes cleaning easy. The high-speed, high-accuracy autofocus helps photographers react in an instant to get those special shots.
*SIGMA mount lens does not include sealing, since sealing is present on compatible SIGMA cameras.

4. Ease-of-use specifications
Instead of conventional ABS plastic, the exclusive lens hood features CFRP (carbon fiber reinforced plastic), a light but strong material used in the interior and exterior fittings of aircraft, among many other applications. The removable Arca-Swiss tripod socket is compatible with Arca-Swiss platforms and clamps, and its exclusive protective cover makes the lens easier to carry and use when shooting hand-held.

5. Compatible with full-frame Sony E-mount cameras The Sony E-mount version of this lens is compatible with Sony mirrorless cameras and contains the same optical system as the versions for other mounts. 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 available via MOUNT CONVERTER MC-11. SIGMA plans eventually to offer 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.

6. Compatible with Canon Lens Aberration Correction
The Canon mount version of this 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, to further enhance image quality.
*Function not available on all Canon cameras. Available corrections may vary depending on the Canon camera model.

Other features

  • 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 Note: SIGMA and Canon mount lens
  • 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: 17 elements in 12 groups | Angle of view (35mm): 23.3° | Number of diaphragm blades: 9 (rounded diaphragm) | Minimum aperture: F16 | Minimum focusing distance: 100cm/39.4in. | Maximum magnification ratio: 1:8.3 | Filter size: ø105mm | Dimensions (diameter x length): ø115.9mm x 131.5mm/4.6in. x 5.2in. | Weight: 1645g/58.0oz.

Articles: Digital Photography Review (dpreview.com)

 
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Sigma 14-24mm F2.8 DG HSM Art will cost just $1,300, seriously undercuts Nikon

23 Feb

When Sigma announced the 14-24mm F2.8 DG HSM Art lens, the company held off on sharing pricing or availability. Fortunately, Sigma didn’t make us wait long, revealing today that the ultra-wide angle zoom will ship in mid-March for the very reasonable price of $ 1,300.

Sigma is not being bashful about this lens. The press release announcing the price and availability of the new Art lens reads:

Designed for 50-megapixel plus cameras, the 14-24mm F2.8 DG HSM Art achieves the legendary Art lens sharpness with three FLD glass elements, three SLD glass elements, and three aspherical lens elements, including one 80mm high precision molded glass aspherical element. With near zero distortion (less than 1%) and minimal transverse chromatic aberration, flare and ghosting, the new Sigma 14-24mm offers constant F2.8 brightness throughout the zoom range and delivers optimal image quality at every focal length and shooting distance. The high-speed, high-accuracy autofocus allows photographers to capture incredible, in-the-moment images that set a new standard in the era of outstanding high-resolution.

Here are a few sample images from Sigma that purport to show off this optical prowess:

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The lens is available in Canon, Nikon, and Sigma mounts, with the Canon version boasting compatibility with Canon’s Lens Aberration Correction function and the Nikon version featuring a brand new electromagnetic diaphragm. All mount options also feature Sigma’s “Sport line level dust- and splash-proof design.”

It seems Canon users have a new ultra-wide zoom option, while Nikon users have been handed 600 very good reasons to consider the brand-new Sigma over Nikon’s own 11-year-old AF-S Nikkor 14-24mm F2.8G ED that goes for $ 1,900.

Press Release

Sigma Announces Pricing & Availability for Its New 14-24mm F2.8 DG HSM Art Lens

The ultra-wide angle zoom will begin shipping in mid-March for a retail price of $ 1,299.00 USD

Ronkonkoma, NY – February 23, 2018 – Sigma Corporation of America, a leading still photo and cinema lens, camera, flash and accessory manufacturer, today announced that the latest addition to its Sigma Global Vision lens offerings, the 14-24mm F2.8 DG HSM Art, will be available in mid-March for $ 1,299.00 USD through authorized US retailers. Designed for 50-megapixel plus cameras, the 14-24mm F2.8 DG HSM Art achieves the legendary Art lens sharpness with three FLD glass elements, three SLD glass elements, and three aspherical lens elements, including one 80mm high precision molded glass aspherical element. With near zero distortion (less than 1%) and minimal transverse chromatic aberration, flare and ghosting, the new Sigma 14-24mm offers constant F2.8 brightness throughout the zoom range and delivers optimal image quality at every focal length and shooting distance. The high-speed, high-accuracy autofocus allows photographers to capture incredible, in-the-moment images that set a new standard in the era of outstanding high-resolution.

In addition to outstanding optical performance, the 14-24mm F2.8 DG HSM Art features the Sports line level dust- and splash-proof design with special sealing at the mount connection, manual focus ring, zoom ring and cover connection, allowing for the lens to be used during varying weather conditions.

The new Sigma 14-24mm F2.8 DG HSM Art lens supports Canon, Nikon and Sigma mounts and works with Sigma’s MC-11 Sony E-mount converter. The Nikon mount features brand new electromagnetic diaphragm, whereas the Canon mount is compatible with the Canon Lens Aberration Correction function.

Full technical specifications can be found on the Sigma website at: https://www.sigmaphoto.com/14-24mm-f2-8-dg-hsm-a.

Articles: Digital Photography Review (dpreview.com)

 
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Sigma announces full-frame 14-24mm F2.8 DG HSM Art lens

09 Feb

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Sigma has announced a new 14-24mm F2.8 HSM Art lens for full-frame Canon, Nikon and Sigma DSLRs. This ultra-wide zoom has three FLD and three SLD glass elements, plus an 80mm ‘high precision molded’ aspherical element. The lens is sealed against dust and moisture and has a nine-blade aperture, minimum focus distance of 26cm (10″) and a weight of around 1.2 kg (2.5 lb).

While the 14-24 comes with a petal-shaped hood, Sigma will offer a ‘front mount conversion service’ that will replace it with a circular hood, which is preferable when capturing content intended for VR use.

Living up to its Art designation, the 14-24mm has been designed with 50MP sensors in mind. It claims to minimize distortion to 1% or lower when focused to infinity, and the Canon mount version of the lens works with Canon’s in-camera lens aberration correction. Each 14-24mm F2.8 comes from Sigma’s Aizu, Japan factory.

Pricing and availability information will be released at a later date.

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Press Release

Sigma Announces Brand New 14-24mm F2.8 Art Lens

February 9, 2018 – Sigma Corporation today announced the brand new 14-24mm F2.8 DG HSM Art wide aperture zoom lens. In addition to the new Global Vision full-frame lens model, Sigma also announced a new front conversion service for the 14-24mm F2.8.

Outstanding Art Lens Performance
Designed for 50-megapixel plus cameras, the 14-24mm F2.8 DG HSM Art achieves the legendary Art lens sharpness with three FLD glass elements, three SLD glass elements, and three aspherical lens elements, including one 80mm high precision molded glass aspherical element. With near zero distortion (less than 1%) and minimal transverse chromatic aberration, flare and ghosting, the new Sigma 14-24mm offers constant F2.8 brightness throughout the zoom range and delivers optimal image quality at every focal length and shooting distance. The high-speed, high-accuracy autofocus allows photographers to capture incredible, in-the-moment images.

Rugged Design
In addition to outstanding optical performance, the 14-24mm F2.8 DG HSM Art features the Sports line level dust- and splash-proof design with special sealing at the mount connection, manual focus ring, zoom ring and cover connection, allowing for the lens to be used during varying weather conditions.

Versatile Camera System Mount Support
The new Sigma 14-24mm F2.8 DG HSM Art lens supports Canon, Nikon and Sigma mounts and works with Sigma’s MC-11 Sony E-mount converter. The Nikon mount features brand new electromagnetic diaphragm, whereas the Canon mount is compatible with the Canon Lens Aberration Correction function.

Pricing and availability for the Sigma 14-24mm F2.8 Art lens will be announced later.

Front Mount Conversion Service for Sigma 14-24mm F2.8 DG HSM Art
Addressing the rising popularity of multi-camera productions, especially using ultra wide-angle lenses in shooting virtual reality (VR) content, Sigma has introduced its Front Conversion Service. Converting the petal-type hood of the 14-24mm F2.8 DG HSM Art to an exclusive round component allows for the lens to be used in various VR scenarios without the risk of interfering with other lenses in the VR rig or undesired shadows in the content.

The availability of this fee-based service for Sigma 14-24mm F2.8 Art will be announced at a later date.

Sigma 14-24mm F2.8 DG HSM Art specifications

Principal specifications
Lens type Zoom lens
Max Format size 35mm FF
Focal length 14–24 mm
Image stabilization No
Lens mount Canon EF, Nikon F (FX), Sigma SA Bayonet
Aperture
Maximum aperture F2.8
Minimum aperture F22
Aperture ring No
Number of diaphragm blades 9
Optics
Elements 17
Groups 11
Special elements / coatings 1 aspherical + 3 SLD + 3 FLD elements
Focus
Minimum focus 0.24 m (9.45″)
Maximum magnification 0.18×
Autofocus Yes
Motor type Ring-type ultrasonic
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale No
Focus distance limiter No
Physical
Weight 1150 g (2.54 lb)
Diameter 96 mm (3.78″)
Length 135 mm (5.31″)
Materials Magnesium alloy
Sealing Yes
Colour Black
Zoom method Rotary (extending)
Power zoom No
Zoom lock No
Hood supplied Yes
Tripod collar No
Optional accessories Petal hood can be replaced with rounded hood via "front mount conversion service"

Articles: Digital Photography Review (dpreview.com)

 
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Leaked: Sigma preparing to release 14-24mm F2.8 DG HSM Art lens

09 Feb

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Earlier today, Sigma sprang a pretty major leak ahead of the CP+ show in Japan. According to leaked images from Nokishita, Sigma is planning to add a 14-24mm F2.8 DG HSM Art lens to its ultra-wide angle lineup very soon. In fact, it looks like Nokishita got their hands on all of Sigma’s standard product shots.

You can scroll through them above, and see some rumored specifications below:

  • Mount: Canon, Nikon, Sigma
  • Lens construction: 17 elements in 11 groups
  • Number of diaphragm blades: 9 (circular aperture)
  • Maximum photographing magnification: 1: 5.4
  • Size (Sigma mount): ? 96.4mm x 135.1mm
  • Weight (Sigma mount): 1,150g

Of course, this isn’t the Sigma 70-200mm that’s been rumored (and hoped for) since before the Photo Plus Expo, but it does make for an impressive lineup of ultra-wides in the much-beloved Sigma Art series.

If previous experience is anything to judge by, Nokishita’s product photo leaks usually come just days (sometimes less than 24 hours) before an official announcement, so we’re expecting this lens to make landfall very soon.

Articles: Digital Photography Review (dpreview.com)

 
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A closer look at the Sigma 16mm F1.4 DC DN for Micro Four Thirds

12 Jan

We’ve got a pair of Sigma 16mm F1.4 DC DN lenses in the office: one for Micro Four Thirds and the other for Sony E-mount. In this article we have some impressions of the MFT version, as well as some other lenses in this class worth considering.

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The 16mm F1.4 acts as a 32mm equivalent lens on the Micro Four Thirds platform. It’s an interesting focal length to end up with: not quite 28mm equiv., which many people would consider the gateway to wide-angle, but also noticeably wider than the near-normal of 35mm equiv. I didn’t expect it to make any difference but found myself constantly fighting against too much stuff creeping into the edges of the frame in a way that I don’t with a 35mm.

In terms of handling, I felt the 16mm worked best when mounted on the larger Micro Four Thirds camera that feature prominent hand grips: its comparatively long length feeling a little unbalanced on the smaller, rangefinder-style boxes, though it’s light enough that it doesn’t end up feeling too front-heavy. The lens’s only control point is a large by-wire focusing ring. It’s a little under-damped for my tastes, rotating fairly freely but it was effective on the few occasions I ended up having to manual focus (turns out LED Christmas lights and autofocus do not always play nicely with one-another).

Optically, I was pretty impressed with the lens, the F1.4 (F2.8 35mm-equivalent) aperture gave me plenty of control over depth-of-field and sufficient light for low-light work. Sharpness seems good if not necessarily stellar and with what appears to be pretty good cross-frame consistency, until you reach the extreme corners. As you’d expect, the performance gets better if you stop down a couple of notches. The 16mm is pretty resistant to flare, even when given significant provocation, with good levels of contrast maintained even in contre jour images with veiling flare.

Autofocus was snappy to the degree that I didn’t ever really have to think about it. Only the aforementioned Hybrid AF/LED Christmas light mismatch caused me to even give it a second thought. It’s fast and quiet to the degree that you just don’t notice it, and can concentrate on composing your shot instead.

Alternatives

My impression is that the Sigma is sharper, two thirds of a stop faster and comparably priced to the Olympus 17mm F1.8. However, I don’t think it’s quite as easy a win as that makes it sound. The Olympus is significantly smaller and features the lovely snap-back manual focus clutch and linear manual focus system (faux-cus by wire, perhaps?), both of which are definite bonuses. So, while I’d find it hard to choose between the two, I probably wouldn’t rush out to replace a 17mm if I had one, not least because I personally prefer the narrower angle-of-view that the extra 1mm brings.

1mm in the opposite direction is the Panasonic 15mm F1.7. It usually retails for around $ 100 more than the Sigma, despite being rated as half a stop slower. Again it’s smaller than the Sigma, meaning it handles better on a smaller camera body. Similarly, the 15mm offers a neat operational advantage over the DN, at least for Panasonic shooters: the lovely Leica M lens style front aperture ring (worth the extra $ 100 on its own, in my opinion and well worth lobbying Olympus for firmware support for, if you’re on that side of the system). Optical performance is perhaps a step up from the Sigma, leaving the 16mm F1.4 DN DC as an attractive extra option for Micro Four Thirds but not an absolute must-have, from my perspective.

Articles: Digital Photography Review (dpreview.com)

 
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Sigma 16mm F1.4 DC DN for Micro Four Thirds sample gallery

07 Jan

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We’ve already taken the Sony E-mount version of Sigma’s super fast 16mm lens for a spin, and we were eager to see how the Micro Four Thirds version stacks up. Announced in fall of 2017, the 32mm equivalent prime includes weather-sealing a nine-blade aperture – all for $ 450.

See our Sigma 16mm F1.4 DC DN for
Micro Four Thirds sample gallery

Articles: Digital Photography Review (dpreview.com)

 
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Sigma 16mm F1.4 DC DN Contemporary for Sony E-mount sample gallery

06 Jan

The Sigma 16mm F1.4 DC DN Contemporary is an ultra-fast wide-angle prime for Sony APS-C mirrorless cameras. The lens features low-dispersion elements, a nine-blade aperture and weather-sealing, all for under $ 450.

We’ll be posting a gallery from the Micro Four Thirds version of this lens in a few days.

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Articles: Digital Photography Review (dpreview.com)

 
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