In this image, the blur of people moving around in the crowd makes it look interesting, but it is also focusing on particular people who are standing, walking, moving in what looks like a busy area. A slow shutter speed is used in this image.
sketch by Andrea Joseph. This drawing looks like it has been done with biro pens. I particularly like this effect as it illustrates the theme of simple objects. The use of minimal colours on the train ticket helps to make the sketch more exciting.