Mon 04-Feb-13 01:17 AM | edited Mon 04-Feb-13 01:18 AM by aolander
That's not pixelization, it's noise. The ISO you used wasn't very high (which will cause noise), but did you crop these photos a lot? They aren't that sharp like you cropped the bird out of the center of an image. Enlarging the image (by cropping) will make noise more visible.