An updated EF 800mm f/5.6L IS is a lens I figured we would have seen already, but here we are still waiting for an update. For the moment, owning an EF 600mm f/4L IS II and a 1.4 teleconverter outperforms the EF 800mm f/5.6L IS in most of the important ways.

It looks like Canon is continuing to work on a follow-up to the longest lens in the current EF lineup.

Japan Patent Application 2018-087965

  • Focal distance 780.00
  • F number 5.80
  • A half field angle (degree) — 1.59
  • Image height 21.64 whole length of the lens 485.85
  • BF 128.77

We've been told to expect new “big white lenses” some time in the next year, but we do not yet know which lenses in the lineup will see an update.

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