upgrade from Canon G16 to mirrorless, any advice?

I have a Canon Powershot G16 in a fantasea housing mainly used with a fantasea wide angle wetlens. I do a bit of diving here in the UK but my main focus is very shallow snorkelling in rock pools (natural light). I am very happy with the performance of the G16, especially combined with the wide angle wet lens. However, one major frustration is that the wetlens collects bubbles at three surfaces rather than one, and another main frustration is that I need to re-attach it all the time after getting in and out of water (the water leaks out from between the housing and lens). One additional problem is that I have a lot of trouble getting the sea&sea TTL strobe to work with the canon for macro (nauticam wetlens).

I am thinking about upgrading. SLRs are too expensive and too bulky, so have looked at mirrorless options. The Olympus OM-D E-M5 Mark II in a Sea&Sea housing with a Panasonic 8mm fisheye looks very interesting (there is a deal on the web with camera+housing+manual strobe). This would solve the two problems above, still be relatively compact and have improvement camera-wise, although I am not sure how much of an improvement). The downside is that I lose flexibility switching lenses and this upgrade is still (very) expensive...

Any thoughts would be most welcome!

Hi there,

If your problem with TTL is exposure, just use your strobe and camera on full manual mode. I guarantee after doing so for a while you'll never look back.

You might be interested to take a look at Seafrogs/Meikons offerings too. The housings a reliable, dirt cheap and come with interchangeable port. You won't do youself any harm by choosing Oly M5.