When you use a Random Orbital polisher and don't break down your polish completely, use too much product or use an aggressive product/pad combo, you can leave little "fish hook" type scratches in the paint. These tiny scratches cause a HAZED or cloudy appearance to the paint when viewed under direct light (See images below or the Hazing video). They are easily removed with a finishing polish and polishing pad, as long as you work the polish in properly.

Below is Menzerna Intense Polish being under worked and showing the results of a Hazed finish.