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Sigma Patent For 28-85mm OS Lens For Mirrorless Cameras

Sigma Patent

Will there soon be another lens for the EOS M system? The patent was spotted by Egami (translated).

At least Sigma is working on an image-stabilized 28-85mm f/3.5-5.6 lens for APS-C mirrorless systems. Exciting news, though I am a bit puzzled because of the 28mm – rather unusual for a crop sensor camera.

  • Patent Publication No. 2014-44246
    • Publication date 2014.3.13
    • Filing date 2012.8.24
  • Example 1
    • Zoom ratio 2.84
    • Focal length f = 29.01-50.00-82.48mm
    • Fno. 3.63-4.59-5.78
    • Angle of view 2ω = 53.08-31.21-19.16 °
    • Image height Y = 14.20mm
    • 92.04-103.13-116.62mm overall length of the lens
    • Inner Focus (Group 4)
    • Anti-vibration (group 2)

Sigma Patent

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