So I've always noticed this for years watching anime, I always look at anime characters and they seem to have to kind of milky/blurry texture on their skin/clothes. It's not to noticeable to some people, but hopefully you can see what I mean with these pics.

(Drag the pics up to your browser and zoom in for a better view of what I mean.)

I copy and pasted the pics in Photoshop and used the eye drop tool on different areas of the skin and clothes, the color codes jump around everywhere so they cant be solid.

Could it be that these frames were scanned in at a certain DPI? Maybe something as a result of a editing software like After Effects? Or maybe it's the texture of the paper?