Tamron Patent for 28-320mm f/3.5-6.3 Full Frame Mirrorless Lens

Tamron has filed a patent for a new telephoto lens with built-in image stabilization. The new patent describes the Tamron 28-320mm f/3.5-6.3 lens designed for mirrorless camera with full-frame image sensors.

This would be good news for the current Sony A7-series FE-mount users. As Tamron produce such good lenses with an affordable price.

Tamron 28-320mm f/3.5-6.3 full frame e-mount lens will sure be a cheaper alternative when compared to the Sony 24-240mm f/3.5-6.3 OSS lens which is expected to arrive to the market in March 2015.

Tamron 28-320mm f/3.5-6.3 Full Frame Mirrorless Lens Details


Explanation self interpretation of patent literature

  • Patent Publication No. 2015-18124
    • Published 2015.1.29
    • Filing date 2013.7.11
  • Example 1
    • The focal length f = 28.84-86.11-315.84
    • Fno. 3.6888-5.2135-6.5631
    • Angle of view 2ω = 75.218-26.4822-7.5356
  • Tamron patent
    • Positive and negative positive and negative negative 5-group zoom
    • Inner Focus (fourth group)
    • Anti-vibration (third group)

via Egami