Stock Info: The Sigma 24mm f/1.4 DG HSM Art for Nikon is in stock at Amazon via third-party sellers.

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Sigma made the glass that incorporates Olympus' wide-angle lens

Sigma filed a patent for a 25mm f/1.2 lens whose image circle fits the Micro Four Thirds sensor.

It is actually part of a series of lens concepts, most of them being f/1.8 designs. By all accounts, one of them is the current Olympus M.Zuiko 25mm f/1.8 MFT lens. It makes little doubt that Sigma designed the M.Zuiko 75mm f/1.8 as well.

So if the the f/1.2 formula ever sees the light of day, it will most likely come out as another Olympus lens, and not a Sigma DN.

[Via Egami]

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Sigma announced that a financial settlement wrapped up the patent infringement lawsuit filed by Nikon back in 2011.

The report provides no further details, except that it won’t affect the activity of the company.

The terms and conditions of the settlement agreement are to be kept confidential between both parties and are not allowed to be disclosed to a third party.
However, SIGMA would like their customers and users of SIGMA products to understand that the settlement will not have any impact on the SIGMA’s operating activities. SIGMA would like to take this opportunity to thank their customers for their continued support.

[Source: Settlement on Patent Infringement Lawsuit between SIGMA and Nikon, at Sigma Japan]

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Canon EOS 760D

Sigma has released an advisory note about an issue that occurs with some of its lenses when used on the recently released Canon EOS Rebel T6s (760D) and related T6i (750D).

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

Most affected models are not from the Global Vision era, and will therefore have to be sent to Sigma for a free-of-charge update.

Users of the 120-300mm f/2.8 Sports lens will be able to do this at home via the USB Dock and the Sigma Optimization Pro software. The firmware update should be released before mid-May.

Here is the list of affected lenses:

Continue reading ›››

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New patent for a Sigma super telephoto lens

Left is the optical construction. The two charts show, from left to right: spherical aberration, astigmatism, and distortion.

A patent corresponding to a Sigma 400mm f/2.8 DG OS HSM Sports lens has been ferreted out by Egami.

It comes with a couple of charts hinting at the performance of the lens (see above), and the usual information:

  • Publication date: 2015.4.9
  • Filing date: 2013.9.4
  • Focal length: 390.00mm
  • Angle of view: 6.29°
  • F-number: 2.91
  • Minimum focusing distance: 2700mm
  • Length of the lens: 353mm
  • Features: Optical Stabilization, internal focus

Provided that Sigma gets the whole package right (AF is as important as image quality for a 400mm f/2.8), it could be a tough rival to the big boys.

Let’s hope more resources will be allocated to manufacturing Sports lenses as well.

[Via Egami]

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Sigma 24mm f/1.4 DG HSM Art and Sigma 18-300mm f/3.5-6.3 DC OS HSM Contemporary

Sigma has been awarded two honors by the Technical Image Press Association (TIPA).

The TIPA Awards are renowned as the most influential photo and imaging product awards in markets around the world. All products and their advertising media bearing the TIPA Awards logo indicate that these have passed evaluations by TIPA’s technical committee and magazine editors. A TIPA Awards endorsement is the highest accolade for any photo and imaging product.

And the winners are…

[Source: XXV TIPA AWARDS (2015), via Sigma Japan]

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