OK...I'll admit it, I'm not a "categories" type of person. My music collection is a good example. I have a "genre" in my database but it has become so generic that I don't use it much.
So, my question is, what are all these different types of photography? What separates one from the other. Yes, some are pretty obvious: sports vs. photojournalism. But what
really (no offense intended) is a "photojournalistic wedding photo"? Is it the fact that it is not posed and more of a "candid" shot?
What's the difference between a fashion, a glamour, and a boudoir (or however you spell that) portrait? Is it the technique? The amount of flesh that shows? What about an "environmental portrait"? A casual?
These are questions that I always ask myself in preparation when I want to ask someone (or I'm asked) about a specific type of shoot.
Samples and/or pointers to references would be great.
(Notice my questions tend to be philosophical in nature?

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