What do all these digital camera MegaPixels mean. It's simple. If you want to take a picture and print it. Well this is how big it will print. But that doesn't mean that you can't make them larger by using a third party software. Now think about it. How many times will you really print anything larger than 4x5.33?
MP Print Size at 300dpi Potential Enlargement
2.1 4x5.33 10x13
3.2 5x7 16x20
4.1 >5x7 20x24
6.1 7x10 26x40
8.3 7.8x11.7 32x49
10.2 8.5x12.7 33x50
12.4 9.5x14.3 40x60
MP Print Size at 300dpi Potential Enlargement
2.1 4x5.33 10x13
3.2 5x7 16x20
4.1 >5x7 20x24
6.1 7x10 26x40
8.3 7.8x11.7 32x49
10.2 8.5x12.7 33x50
12.4 9.5x14.3 40x60