Is 3.0 or 3.2 megapixels better?

Answer 1

3.2 would be better, but not by much. The higher the number of megapixels, the higher quality your image will be (and consequently, the more storage will be needed because they will be bigger files). So details that are present in a 10 megapixel camera will not be present in a 3 megapixel camera.

Answer 2

The camera will take a photo that contains 3,200,000 pixels (mega=million). For example, a photo that is 2048 pixels wide and 1562 pixels tall will be 3.2 MP.

Answer 3

its really good