Nature photographer Rob Sheppard
has written a series of articles on his Nature and Photography blog
that describe the importance of proper exposure in photographs. The Craft of Exposure in Photography
, Parts I, II and III, are all worth reading, but I especially like his statement that "technology should serve the photographer and not the other way around." Check out these posts and see if his approach makes sense for your photography. Note that if you are a people photographer or a photojournalist, this information is still relevant to your preferred subjects.