A few seconds into “London Graffiti Artists,” a title card reads: “The world is racing past us…sometimes we need to slow down.” To help us accomplish that difficult feat, the director Cassius Rayner has shot his mini-doc entirely in slow motion.

“London Graffiti was shot using an iPhone 6s and a Smooth C 3 axis gimbal. The camera app was FiLMiC Pro.

In an earlier piece, we interviewed Cassius about his approach to documentary filmmaking. You can find out more about classes that he teaches at mobilefilmmaking.com.