What is Rule of Space?

 The 'rule of space' in photography is a method that uses visual absence to give the subject a chance to standout.  It is a compositional device used to add a sense of vastness and depth to a photograph. In other words, the space highlights the subject.

To use the rule of space effectively, you have to decide how to convey your subject in the space it occupies. Is it movement, perspective, depth, or size?

I chose the legendary Calgary Tower as my example. At one time, the tower was the tallest building in Calgary, and it soared uncontested into the sky.  It is now one of the shortest buildings, but by photographing it with space around it, I made it stand out as the most important part of the image.