Just to ensure my point isn't lost and given the interest in the topic, I'm going to state a few things upfront.
I'm
not saying :
M43 has lost its advantage of small sized lenses and cameras
That you can't get cheaper smaller high quality glass when compared to Sony FF
That you don't have a better lens line up that is fully flushed out and provides more options (i.e. high quality Zooms)
That you don't have other advantages
I
am saying:
When comparing the best offerings of m43 to Sony FF, the size advantage many join the m43 format for is just
starting to disappear. This can be seen simply by making combination comparisons, you don't need direct experience with the camera to make this observation.
The possibility of having a similar sized camera and lens combination (especially if you are a prime only shooter) with a FF sensor and cutting edge technology is mind blowing
Cost factors for going to Sony FF cannot be ignored when compared to the value in the EM1mkii
So perhaps this frames it a bit better. Additionally, while zoom options might be better for the EM1mkii, of the new Sony zoom is any good, it's a great walkabout range with potential for high quality results, at a steep price.
It's also my opinion that you should be comparing the high end options when it comes to lenses and with the size (but apparently excellent optical quality) of the new Olympus lenses, you now have a much bigger and heavier kit, quite compatible to the new Sony A7rmkiii of course with the compromises that come with the current Sony lens line up not fully flushed out. So depending on your needs, this isn't necessarily fully true.
It would be up to you whether the cost difference matters.
Also, as ii mentioned previously, the m43 format suits me just fine. I have the Pen F as you can see from my gear, and frankly love it. Not sure if sell it for a long time. This is just a topic that interests me and other folks so worth having.
Trolls not welcome.
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My flickr account.....in its infancy as of March 2015. Feel free to comment!
https://www.flickr.com/photos/130003647@N03/