zoom in photos

How to zoom in maps, images in PowerPoint
when you present a powerpoint slide, you'll need to zoom in on a detail to emphasize that detail, or to let others see it clearly. you can zoom in on an image, or even part of the map.
How to use Photoshop CS5 - Part 29: Create a zoom effect in a photo
use photoshop's radial blur filter, along with some tips for the layer mask and gradient tool to create an image enlargement effect