What are some popular Canon flashes techniques?

A popular technique is the idea of Swivel. This involves directing the flash onto an alternative surface instead of directly onto the subject. As a result the light is significantly softened. Some flashes are capable of "zooming" - which moves the flashbulb closer to the edge, or further away. This leads to a widening or narrowing of the field of light created by the flash. Remember, that not all Canon flash units are capable of the same performance, so check the type of unit before attempting to set up a shot involving these ideas.