A patent showing three different optical formulas for APS-C sensor cameras has appeared.

According to Canon News, this patent is missing some good information that would help narrow down what these embodiments are for.

The 3 embodiments:

  • 15-45mm f/2.8-5.6
  • 15-45mm f/2.0-5.0
  • 15-60mm f/2.0-5.0

From Canon News:

Our assumption with this patent application is that these lenses are for APS-C given the focal lengths of the lenses, however in this patent application, unlike most, the half image width is curiously missing from the patent application.  This could be for a mirrorless EF-M camera, or even a APS-C compact camera.  It's hard to tell without the image half width.  The patent description seems to be talking more about a compact camera.

It looks like the 15-60mm f/2.0-5.0 has an extremely short back focus suggesting it may be for a PowerShot application and not for mirrorless or APS-C DSLRs.

We wouldn't be shocked to see a new EF-M 15-45mm lens announced alongside the EOS M5 Mark II, as we've been told that a new kit lens of some kind is on the way.

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