Not sure I see your point, you've already said MFT has a broad range of lenses and most MFT bodies might not be able to support an adapted FF lens. Why would Panasonic invest the funds to produce adapted lenses for a VERY limited range of MFT cameras some of which duplicate existing lenses (100-400mm and the rumored OMDS 50-250mm). Remember the Olympus 100-400mm lens is said to be an adapted Sigma 100-400mm and the major complaint about that lens is its size and weight.

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Woody