We previously reported Sigma would be updating some of their large primes.

[PR] via [EG] &  have posted a patent for a new Sigma 500 f/4 supertelephoto lens.

With the price of the new Canon offerings, there's going to be lots of room for other companies to make big glass more affordable.

Patent Information:

  • Patent: 2011-70043
  • Patent filing date: Sept 28, 2009
  • Focal length: 489.9938
  • Aperture: 4.1004
  • Angle of view: 5.0498 °
  • Back Focus 90.3449mm


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