Explaining Resolution To paint your bedroom you buy two gallons of paint. It does a fine job of doing your bedroom. To paint your house you buy two gallons of paint. It is too little paint, so you add water to thin out the paint. It does a terrible job of covering your walls.
Resolution has dots.
You need a resolution of at least 1200x800. Lenses One of the things I enjoy about my regular camera is the telephoto lens. It lets me take pictures when people are unaware I am taking the picture. Most of the digital cameras today do not have interchangeable lenses. Storage Most of the digital cameras have two levels.