Back in 2016 we had heard a few times that Canon would be introducing a new supertelephoto zoom, something like an EF 200-600mm f/4.5-5.6 IS. This is the type of lens segment that is dominated by Sigma and Tamron, as Canon's longest “affordable” zoom is the EF 100-400mm f/4.5-5.6L IS II.
Since the start of 2017, all has been quiet in regards to such a lens. Recently we've started to hear about the development progress of a new supertelephoto zoom from Canon.
While the lens won't be coming in 2017, we're told there's a good chance it will come in the first half of 2018. We're also told that Canon seems to have a goal to give any new lens some kind of a unique feature over the competition. What that could be for a supertelephoto zoom is anyones guest, but recent history does show some innovation in the lens department from Canon.
We have seen such optical formula patents from as far back as 2015, but since the demise of the patent hunter site Egami, we haven't seen anything more.
More to come…