Is there much difference between a camera with 5 megapixels and a camera with 7.1 mega pixels?
Some right info from others; others are giving misleading or wrong information. For example, the “42%” figure is completely misleading. In point of fact, you would need to double the number of megapixels from 5mp to 10mp to see a noticeable difference in a printed image for a bunch of mathematical reasons that have to do with the fact that you’re dealing with a rectangle and not just a number. Similiarly, “more megapixels are better” is also misleading. Too many photosites crammed onto the sensor will cause poorer performance in dim light and increase image noise. So past a certain point, more isn’t really better; in fact, it’s actually worse. The sweet spot for point and shoot sensors is from 5 to 8 megapixels, these days. So, all other things being equal, there isn’t much difference between a 5mp and 7mp camera for virtually any print size. Nobody will be able to tell the difference, and the bigger variable will be the skill of the photographer. However, in the real world, things are
