But even though taking a photograph at a subject's eye level might be the ideal, the mood of a photograph can greatly change by changing your view on the subject.

For example, if a magazine asked you to take the photos for a story they were publishing about the fear of bears, you might want to photograph a bear from lower than eye level. This would give the readers of the article the perception that those bears are even bigger than they already are. Or if you wanted to show how much you love wood ducks, you might want to get as low to the ground as possible to show the size of the duck as bigger than in real life to communicate that message of importance to you.

So again, take the ideal shots but then mix it up because you just never know what you might see in post processing that catches your eye.