I am in professional software development for nearly two decades and therefore saw things coming and going. The last few years I spend most of the time developing in C#/.Net for all kind of software like Desktop-Clients, Web-Application and different backend and services.
Back in 2004 I've started scuba diving by getting certified as PADI Open Water Diver. I then moved on until 2007 when I got my PADI Divemaster. In 2008 I started technical diving with TDI. I then moved to ISE (Inner Space Explorer to get DIR focues training). In the meanwhile I am certified as: PADI Divemaster, TDI Trimix, ISE Exploration Diver 1, ISE Gasblender. Regarding underwater photography I got my Nikon D90 DSLR back in 2009 where I started DSLR underwater photography. Before I used different compact cameras but did not get that happy with them.
Photo & Dving: http://marcduerst.com