Sigma Patent for 28-85mm f/3.5-5.6 Lens For APS-C Mirrorless Cameras

Egami has discovered a new patent filed by Sigma. The patent describes a new Sigma 28-85mm f/3.5-5.6 OS lens for APS-C mirrorless system cameras.

If we count on the crop sensor this is almost a medium zoom range start as 28mm. Anyway it is exciting news if this lens step into the production. The pending patent is an image-stabilized 28-85mm f/3.5-5.6 lens for APS-C mirrorless systems. See below for the patent details.

Sigma Patent for 28-85mm f/3.5-5.6 Lens For APS-C Mirrorless Cameras

• 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)

via EG