I think most of your speculation is in the wrong topic.
Anyway that lens won't give the reach of nearly 800mm, maybe close if on APS-C camera.
Like PakkyT said we would also need reviews to say much.
I have read that high MP FF in crop mode will give quality like 12MP M43 camera. But as a novice someone else has to explain it or you look for info about it.
Hahaha on your comment about PEN-F (which I bought 8 months ago used and very happy about the whole experience), I guess I can call myself a film shooter now.
Agree. I should have posted this on the other thread, however I wanted to share the price of the Sigma and I lost myself. I just saw more people discussing the same thing and our thoughts match, so I’m not the only one that thinks the same about Olympus strategy.
Regarding the lens, just ignore the reach the lens can give you. In terms of manufacturing process, a 100-400 is a 100-400 regardless of cameras sensor. Same focal length, same apertures as similar (??) IQ should be priced the same. I can easily see Olympus asking more than 1500$ for this lens.
Like I said, a FF in crop mode can give you the same or almost the reach. The amount of Mpx will depend on the model and the full Mpx count. Sensors with big Mpx count will allow for massive crops that will match a 100-400 on a M43 camera.
I know exactly what Olympus can give me that other brands don’t and that’s why my kit is all Olympus with one EM10 and EM1 (both mark2) plus 6 lenses. Don’t get me wrong, the PenF is a lovely camera. The same for the models I own. The EM1 is brilliant.
But we are a very small group of people. The “average joe” will get something else. Because it’s cheaper, because it’s on sale, because it has better marketing, etc
And a company to be profitable depends on the “average joe”, not on a group of forum enthusiasts.