In 2020 we will get this nice 150-400mm MFT lens. And recently the patent for this lens has been published on J-platpat.inpit.go.jp. The patent also describes the design of two more lenses:
70-250mm f/3.5
100-400 f/4.5 MFT lenses
The 100-400mm lens might not be released while there is a bit more chance to get this 70-250mm MFT zoom…
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