The patrician-looking (and rather taciturn) sadhu in the top photograph did tell me that he had a family, had held a managerial position in the Indian Railway from which he earned a pension (now paid to his wife), but had decided to detach himself from temporal life and was currently studying the Vedas. These are the oldest scriptures of Hinduism. He was the embodiment of a real sadhu who had really espoused the Vairāgya, and was far different from the "sadhus" I encountered on the ghats of Varanasi (below) almost 8 years later.
If you are a top notch, worldwide known photographer, it is very likely that customers from all over the world will want to use your services (for fashion, events, sports, architecture, products etc.). But as we are focusing on travel photography, commercial organizations that deal with traveling and tourism are more likely to hire you. Notable examples are hotels, tour companies, airlines and so on.
The Lower Omo River in south west Ethiopia is home to eight different tribes whose population is about 200,000 and it is there that they've lived there for many centuries. The tribes such as the Daasanach, Kara (or Karo), and the Mursi live along the Omo river and depend on it for their livelihood. The annual flooding of the Omo River feeds the biodiversity of the region and guarantees the food security of the tribes especially as rainfall is low and erratic.
Photographers for National Geographic spend a lot of time doing research. This helps us figure out what's there—what the place is about and what subjects we need to cover. Read brochures and travel books. Go to libraries, bookstores, or onto the Web. Talk to friends who have been there. Pick up travel information at the country's embassy. Find whatever you can that is relevant, and devour it.
This was a really informative article Hillary :) Just wish I found it sooner because just a week ago I went to the Grand Canyon to snap some photos. I didn't have this article to help, but I found a similarly useful article that provided some kind of checklist of things to do before traveling. If anyone's interested, here's what helped me out before I went to the canyon: http://www.adoramapix.com/blog/2016/10/16/photography-101-packing/#.WFH9...