Tamron 200-800 and 15-30 patents exposed

   Recently, Tamron applied for a patent for the optical design of two new lenses. These two lenses may be used in Sony E mount:

Tamron 200-800 and 15-30 patents exposed

  200-800mm f / 6.5:

   Focal length: 205.426 447.698 774.302 mm

  F value: 6.583 6.586 6.583

   Angle of view: 6.008 2.752 1.586

   Image height: 21.633 21.633 21.633mm

   Back focal length: 56.1827mm

  Total length: 415.348 415.348 415.348mm

  15-30mm f / 2.8

   Focal length: 15.454 21.199 29.106 mm

  F value: 2.90 2.90 2.90

  Viewing angle: 111.748 91.720 72.321

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