The best way to find someone like this is to look at your friends' albums. If you like what you see, ask about the photographer . Another great starting point is the internet. It is now loaded with great wedding services. Some guides, like The Maryland Wedding Guide and The Washington Wedding Guide, have chat rooms for prospective brides as well as samples of photographers' work.
Many photographers now have home pages, which can be accessed directly from the guide.
The Web can save a lot of leg work. Do beware of referrals from caterers and reception sites. Although these can be a good starting point if you are provided with a list, be careful when only one or two businesses are recommended. There may be a mutual arrangement in place that is not in your best interest. In order to have the best that is available, selection of a photographer should be one of the first items on your planning schedule, along with the church and reception site.