However, for the purposes of marketing we need to set limits. No one can be all things to all people. I am a wedding photographer in the St. Louis area. I will never cover the Norwegian Curling Championships. Even if I did, my client base would not be impressed to the point it would lead to a noticable increase in work. Therefore, I can cross the Norwegian Curling crowd from my marketing effort and put those resources toward a market I do want to work for - brides in St. Louis, MO.

By choosing not to specialize, you have in fact made a decision and chosen a market. I read your comment to say you are choosing to be the go-to photographer for your loosely defined geographic area. There is a market for that, and I sincerely hope the best for you in conquering it. Set up your marketing material to highlight your talents and make sure the search engines can find you when people search for photographers in your area. But also know that if someone in your area has a "can't fail" project, they may choose a specialist photographer from farther away, even at a higher cost, to make sure it is done right rather than the generalist who may or may not have enough experience to pull off their very important project.