14m, 10m, 6m, 3m and these to aspect ratio: 3:2,16:9, VGA. So the first set of figures determines how many pixels are in each photo. 14MP is a huge photo and from it, you could print a very clear poster size photo print i.e. there are lots of pixels there. But you don't need anything like that many pixels for emailing photos and uploading to OZtion err... quicksales. My camera is set to take photos measuring 2816px x 2112 px which is around 6MP. Even at this size, they are way too big for printing postcard size prints and certainly too big for emailing. I have to edit this size photo to a smaller size first. So if you don't want to have to reduce photo size before emailing or uploading to websites, then I would set it to the smallest setting i.e. 3MP. The more pixels in a photo, the bigger the file size and the fewer photos you can fit on your camera card. The aspect ratio determines the proportions of length x width. My camera, at its setting of 2816 x 2112, has an aspect ratio of 4:3, which is a bit of a nuisance when getting photos printed, as the most common print size is 15 x 10cm, an aspect ratio of 3:2. This means when I get photos printed, I have to crop out some of the shorter side. So if you can choose an aspect ratio of 3:2 in your camera settings, and get standard size photos printed from your shots, I would set it to 3:2. If you don't get prints made, then leave it at 4:3. The VGA reference comes from the aspecxt ratio of a computer monitor, which is also 4:3. The 16:9 ratio is commonly found in HD TVs. i.e. wide screen.