So, maybe this has been addressed, and I missed it, but....
I went to a photo fair at our local shop this weekend and had the chance to both talk with the Olympus rep as well as play fairly extensively with the EM-1 (and others, but that is a different post ).
To set the stage, I shoot with an EM-5.
While there was lots to like, I ran into quite the annoying feature in the shutter release. Every time I tried to half press it to achieve focus, I ended up taking a picture. After some initial confusion and asking the rep, I discovered the half press was basically, barely touch it at all and no press at all. It was almost as if I were using a touch screen. Any travel of the shutter release at all took the picture.
I'm surprised I have not seen this mentioned elsewhere. And, of the multitude of cameras I have shot with, this is the first with a shutter release like this.
To make it tolerable, I ended up putting focus only an the AFL button and off the shutter release button.
Anyone else run afoul of this?