Sony Patent for FE 28-70mm f/4 OSS Lens

Sony has filed a new patent in Japan. The new patent describes a FE 28-70mm f/4 OSS lens designed for mirrorless cameras with full-frame image sensors.

Sony FE 28-70mm f/4 OSS lens is in development and the patent application shows a FE-mount lens with a standard zoom model offering a focal range from 28mm to 70mm. The mirrorless lens offer a constant maximum aperture of f/4 and comes with built-in Optical SteadyShot technology.

Along with the current FE-mount standard zoom lenses, the Sony FE 24-70mm f/4 ZA OSS and Sony FE 28-70mm f/3.5-5.6 OSS lenses, the new Sony FE 28-70mm f/4 OSS lens will be ideal for landscape or architecture shootings and for portrait or wildlife photo sessions.

Sony FE 28-70mm f/4 OSS Lens Patent


Explanation and self-interpretation of the patent literature

  • Patent Publication No. 2015-64492
    • Published 2015.4.9
    • Filing date 2013.9.5
  • Example
    Example Focal length Fno. Half angle
    One 28.84 47.06 67.90 4.12 37.05 23.46 16.72
    Two 24.73 46.25 67.91 4.68 42.23 24.02 16.75
    Three 24.72 47.00 67.90 4.10 42.42 23.61 16.70
  • Sony patents
    • Positive and negative positive and negative negative five-group zoom
    • Inner focus (fourth group)
    • Vibration control

via Egami