In reply to malk:
> how did you get that comparison?
https://tomscameras.wordpress.com/2012/11/21/shooting-tele-macros-with-the-...
Results at F/5.6 are probably the most obvious.
> and you've got me looking for used E-M5 I bodies as an alternative to an upgrade to sony a6000. weather sealed body with IS is very tempting at £200. there's also a peaking function hack you can do..
While I hate Olympus menu and few other quirks (like Lumix 20mm F/1.7 banding on some bodies and so on), it's great. The choice of lens in 10-100mm range is great, varying from cheap Sigmas primes to Oly PRO series. It even feels like there's too many primes in 15-25mm range.
I have used variety of cameras from a rangefinder made in 1962 to Canon 1D with L lenses. There's something about Olympus/M43 that just makes me happy to use them.
AFAIK E-M5 II is not a huge upgrade image quality wise, so E-M5 should be a great option.