I was looking for some info to buy digital camera. Following bbc information found useful. Pixel = Picture Element MegaPixels(MP) = Million of pixel Megapixels is important for viewing and editing picture 3 MP = enough for 6 * 4 size picture printing quality 5 MP = A4 size picture printing quality more than 6 MP = good enough for poster size printing quality Optical Zoom matter and than digital zoom. Go for optical zoom feature For more information visit following link - http://news.bbc.co.uk/nolavconsole/ukfs_news/hi/newsid_4950000/newsid_4952800/bb_rm_4952884.stm Any sajabashi, have more info about it please respond here......... Happy digital age