A patent showing 4 new optical formulas for EF prime lenses has appeared.

Japan Patent Application 2018-005133 shows the following:

  • EF 50mm f/1.8
  • EF 85mm f/1.4 (Not the same as the EF 85mm f.1.4L IS)
  • EF 85mm f/1.8
  • EF 100mm f/1.8

The EF 85mm f/1.8 and EF 100mm f/2 could both use a replacement, the former being more likely.

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