Hi! First of all I am brand new to this forum and brand new to photography. I'm hoping to get advice on which camera would be best to use to photograph small items (like jewelry). I don't know what to look for in a camera. Until recently I thought you measured the power/strength of the camera by megapixels. For taking close up photos of small items, would you recommend a Nikon (8 megapixels) or an Olympus (12 megapixels).