Yea definitely shutter and exposure problem. Just mess around with it. Try a number of different settings and write each one down. Then when you go to review your pictures, match your settings and pictures and find out which setup worked best and take note.

__________________
What was the best thing before sliced bread?
-George Carlin

Anger and intolerance are the enemies of correct understanding.
-Gandhi

All religions, arts and sciences are branches of the same tree.
-Albert Einstein