Upload & Sell: On
These look superb. So is low light focusing a GO on the X-E2 compared to X-E1?
Yes and no. AF on the X-E2 is a marked improvement over the X-E1's, with significant performance gains across all conditions. That said, it can still hunt a bit in truly dark/low light situations. The X-E1 was like training a puppy: Once you established your expectations (i.e., camera settings, learning functional idiosyncrasies, shooting proactively, etc) then you'd usually get what you hoped for. The X-E2 is like having a purebred that's been professionally trained: It does what you ask 99% of the time.
It should be noted that for this series of shots, lighting was often good on stage; rarely was there total darkness. I had my 5D3 with fast L glass along just in case. It's super fast in low light and instills confidence shooting in conditions like this. That said, I never felt the need to grab it ... which is good, since it'd have been overkill for a bunch of snapshots.
FWIW ... I shot Auto ISO with a ceiling of 3200 since lighting varied almost constantly throughout the show, going from bright whites to dimmer, coloured gels. If there had been consistent light on stage I would have shot full manual at a set ISO. Looking back on image files I can see ISO ranging from 800 to 3200.
One thing has me scratching my head though. My *minimum shutter speed* for Auto ISO was set to 1/100 sec. However, I see shutter values as low as 1/18 of sec! In fact, a good half of my image files register below the 1/100 threshold set in-camera. Not sure why and will have to investigate, because results for under, say, 1/60 were blurry (as might be expected).