I wanted to know how much megapixels everybody uses and why?
Do you really need that?
For me, I shoot my Canon 5D Classic on medium. So my 12mpx camera does 8mpx and all the images I see on my screen and the ones I print (10*15cm) look fine. My files are only 2.5 - 3.5mb big, so it doesn't take a lot of space. I don't see why I need 21mpx...