The OM-D E-M5 is a new type of Micro Four Thirds camera and seems to really move the game on. It is very impressive, both in terms of performance and image quality. IQ particularly impressive in terms of dynamic range and ISO. Lens choice seems to cover all. Some aspects of the housing are excellent, some less good. Will post some pictures of the kit when I've taken some tomorrow.
I am here to review it for Wetpixel and see if it really is a viable alternative to a DSLR (my excuse for posting in this forum)
Here are some snaps taken as I was figuring out how it worked as the light faded rapidly. Only done one dive so far - trying the Panasonic 8mm fisheye.
Taken with Olympus E-M5 and 8mm fisheye. 1/15 @ f/5, ISO 800. Available light (hand held with in body 5 axis stabiliser).

Taken with Olympus E-M5 and 8mm fisheye. 1/30 @ f/8, ISO 400. 2 x INON Z240.

Taken with Olympus E-M5 and 8mm fisheye. 1/15 @ f/10, ISO 3200. Available light (hand held with in body 5 axis stabiliser).

Taken with Olympus E-M5 and 8mm fisheye. 1/3 @ f/11, ISO 200. 2 x INON Z240.

Now must sleep!
Alex