Sigma 55mm, 65mm and 70mm f/1.4 lens patents spotted

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Sigma patented three fast Full Frame primes:

  • 55mm f/1.4
  • 65mm f/1.4
  • 70mm f/1.4

All three for mirrorless systems (via Asobinet)

And Digicameinfo also spotted this patent for new Sigma 20/22/24/28mm f/2.’ primes.

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