You throw out the phrase "under £7,000" as if that is an option; for most of us it is not. But I concede that maybe it is "sensible" considering what you get, and in comparison to comparable full frame lenses in other platforms.
The built-in teleconverter and the zoom design both drive up the complexity and cost of the 150-400, unnecessarily for me. I think OM System could if they wanted introduce a super telephoto prime lens longer than 300mm, without any built-in teleconverter, for way less than the price of the 150-400. I for one would like to see that someday.
The Oly or Panasonic 100-400 are good lenses I'm sure, but they offer little benefit to me over my current 300 f/4 Pro with the 1.4X TC. The zoom capability is nice, sure, but not a priority to me. So that leaves no other options without jumping up to the 150-400 "beast."
I don't need 2000mm equivalent focal length, but IMO claiming that the 150-400 can reach that is sort of a weak point. Using both the built-in 1.25X TC stacked together with a second 2X teleconverter resulting in a maximum aperture of what ~f/11 (?) -- sure it may be possible but strikes me as a bit of a non-starter (how many total glass elements is that ?).
OM System and Olympus before them seem to be a little biased toward zoom lenses in general, especially looking at available telephoto or super-telephoto options. I try to keep an open mind. Zoom capability is not a high priority for me personally but I still appreciate others might really want it and it
does add benefit/value. And I know zoom lenses today can be designed with little or no compromise compared to a prime, but again, it comes with added cost & complexity.
Getting back on the subject of this thread, the new OM-1 looks like a significant upgrade over my current E-M1 II (and the E-M1 III). And the new GH6 also looks really impressive, but it is very different. It's so nice to see major improvements in micro-4/3 and I hope both new flagship models are successful. I thought this article lays out nicely how different the 2 new cameras are:
Only a few years ago, micro four thirds seemed to be headed in a predictable and unexciting direction, so much so that many started to doubt it would survive for long. Surely, we’re far from the years when there was a new OM-D, Pen or Lumix camera every few months, ... Read more
mirrorlesscomparison.com
Dave