All your photos are dull and grainy but so are a lot of mine. I wouldn't be too quick to blame it on the camera. Plan each shot you take and keep retaking the same shot until you get it right before going on to the next shot. Reefers are always in a hurry. Plan no more than 2 photo sessions a day and shoot no more than 4 photos per session until you start improving, then increase. I've heard of a photographer planning a single shot for a whole week. Prepare your shots and get to know your camera.
Your turn.
Your turn.