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Sigma service advisory

Update: The details are now available in English on Sigma’s website.

Sigma issued a service notice (for now in Japanese only) regarding a Live View issue occurring on the Canon EOS 5DS and 5DS R with some Sigma zoom lenses.

Phenomenon

When the Live View Mode button on the camera body is pressed, the operation stops without displaying images on the rear LCD monitor.

Good to know

  • If your lens was updated to be compatible with the EOS 760D / 750D, then it will also work with the 5DS / 5DS R. Otherwise you will have to send it to Sigma for a free firmware update.
  • Lenses shipped after May 11, 2015, already have the new firmware and will work in Live View with any current Canon DSLR.
  • Users of the 120-300mm f/2.8 DG OS HSM Sports – the only Global Vision lens to be affected by this issue, see list below – can do this at home using the USB Dock and Sigma Optimization Pro.

Continue reading ›››

Sigma Photo Pro 6.3 Released

June 19, 2015 Posted in News 1 Comment

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SPP

Sigma Photo Pro 6.3 is available for download.

This new version is said to offer improved image quality. I’ll make a comparison to see the differences with SPP 6.2.

Benefits of the latest SIGMA Photo Pro software

  • By reviewing the image development process, it has improved image quality of RAW data (X3F file) of the SIGMA dp Quattro series.
  • It has improved the image development process of long exposure photography, for images taken by the SIGMA dp Quattro series.
  • It has added the Quick Check Mode to the Main Window (this feature is not available for RAW data taken with SD9 and SD10 cameras).
  • It has added the Specifying Folder function to the “Computer” pane in the Main Window.
  • It has corrected the phenomenon that it occasionally develops corrupted image data when the X3 Fill Light function is used.
  • It has corrected the phenomenon that the brightness level cannot set at 2 or lower if the RAW data is taken with the SIGMA SD1, Merrill series, and dp Quattro series.

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The world's first large-aperture full-frame wide-angle zoom lens offering f/2 brightness throughout the zoom range

Sigma’s new addition to its Art series is an as-exciting-as-unexpected 24-35mm f/2 DG HSM — the first ever f/2 full-frame zoom lens, and most likely the “very unique lens” hinted by Sigma’s CEO last year.

It should be available in late July 2015. The price has not been disclosed yet.

Specifications

Lens Construction 18 elements in 13 groups
Special Glass 1 FLD element, 7 SLD elements, aspherical elements
Angle of View 84.1°-63.4°
Minimum Aperture f/16
Minimum Focusing Distance 28cm / 11.0in.
Maximum Magnification Ratio 1:4.4
Filter Size 82mm
Number of Diaphragm Blades 9 (rounded diaphragm)
Size (Diameter x Length) 87.6mm x 122.7mm / 3.4in. x 4.8in.
Weight 940g / 33.2oz.

Press Release

While offering the premier optics of the Art line, this lens covers 24mm, 28mm and 35mm focal lengths. Incredible performance overturns the conventional perception of a zoom lens.

SIGMA was determined to create a zoom lens that offers the same brightness and resolution as a fixed focal length lens: in other words, the highest level of optical performance. The result of this challenge was the SIGMA 18-35mm F1.8 DC HSM | Art, the world’s first zoom to offer a fast F1.8 aperture value throughout the zoom range. Building on this concept, SIGMA has developed the new SIGMA 24-35mm F2 DG HSM | Art for 35mm full frame sensor. It allows photographers to carry one lens to do the work of three fixed focal length lenses, a 24mm, 28mm and 35mm — with F2 brightness and top optical performance. One package delivers flexible functionality and high convenience. In particular, at the 24mm and 35mm focal lengths, this lens offers the performance that is equivalent to that of two prime lenses in the Art line. Instead of changing one high-performance fixed focal length lens for another, simply zoom. This is a new zoom lens for 35mm full frame sensor SLRs that offers the quality of a fixed focal length lens at various angles of view.

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Sigma 24-35mm f/2 DG HSM Art

Sigma 24-35mm f/2 DG HSM Art with hood

Sigma is going to announce a 24-35mm f/2 DG HSM Art lens with 82mm filter thread.

Needless to say, this one is a huge surprise, although a hint to a lens of this kind was given by a Sigma rep at Photokina 2014. It may also be the very unique lens Sigma’s CEO was talking about.

We’re probably heading towards a nice zoom trinity:

  • Sigma 24-35mm f/2 DG HSM Art
  • Sigma 24-70mm f/2.8 DG OS HSM Art (rumored)
  • Sigma 24-105mm f/4 DG OS HSM Art

Stay tuned for more details!

Source: Digicame-Info


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Sigma's patented 35mm lens and Panasonic's 42.5mm f/1.7 optic

Left: Sigma 35mm f/2 DN OS Art. Right: Panasonic 42.5mm f/1.7 OIS

Here’s a new patent from Sigma, showing what could be a 35mm f/2 DN Art lens with Optical Stabilization.

Oddly enough, it only covers the m4/3 image circle, while all existing DN lenses cover the larger APS-C image circle. The optical formula seems to be quite similar to Panasonic’s 42.5mm f/1.7 OIS lens, so it may have been a base design for this lens.

Sigma 35mm f/2 DN OS Art
Patent Publication 2015-102559
Publication Date 2015.6.4
Filing Date 2013.11.21
Focal Length 36.00mm
Fnumber 1.95
Angle of View 33.92°
Image Height Y 10.82mm
Overall length of the lens 57.69mm

[Via Egami]

Sigma Gear: Prices & Stock Price/Stock Info as of 07/04/2015 06:04:42 GMT Access Here
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