Check this out. A very detailed series on what it takes to put just one story together for National Geo, from the photographers perspective. This is provided to us by the very often published NGO photographer Cary Wolinsky.
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Most people, including photographers, have no clue what it takes.
Wow! I have always had a lot of respect for National Geographic photographers, and wondered how they go to foreign countries and get such good photos. While that alone takes a lot of work, it's almost minor to the total project.
Great artical - thanks for bringing it to our attention.