I used to work in the great outdoors of New Zealand. Helicopters,Hilux's, Quad bikes and Jet boat travel or tramping into some of the most beautiful area's in the South Island. But the weight of an camera was a luxury few of us could afford, I mean it weighs as much as a bottle of red or a six pack of beer.
New job, new location, new toys, like PDA's, laptops, digital camera's and GPS so new work toys new hobby....
I use a Sony Cybershot 5.1 megapixel digital camera. The only image editing/manipulation I do is with the Windows Picture and Fax Viewer program preloaded on my laptop, or in camera via the various options sepia, balck and white, length of exposure etc.
Themes depend on where I am, whats around me, what I am doing and what others are doing.
I have been known to take photo's only from above terra firma, only onboard a commercial airline flight, only involving water or rocks or tree's or machines yadda yadda yadda