When sense of motion and speed is combined together and captured with lens of camera in a beautiful manner, it is called motion blur. This can also be done with Photoshop but then it does not look as real as motion blur photos captured by a photographer.
In motion blur photography, emphasis is on one center item and rest of the image is a blur of beautiful and attractive colors of the surrounding. Mostly the subject of focus is kept in middle in such photography. The technique of motion blur photos is that the speed shutter should be slow.
In this article you will find 40+ Great Motion Blur Photos for Inspiration. This is the ultimate collection of motion blur images and will definitely inspire you.