Crime is the focus of Apple's whodunnit

Racking focus - the art of changing the depth of field of an image to draw the viewers eye - is pure cinema, so it's hardly surprising that it's the showstopping element of Apple's new 'Cinematic' camera mode.

In true Apple style, in order to showcase the effect a short film, Whodunnit, has been created, featuring more shifts than the average focus-puller would manage in a month.

Taking the form, as the title suggests, of a campy mystery, PRETTYBIRD's JB Braud's mini-movie manages to cram in trope upon delightful trope, demonstrating not only the abilities of the feature but also the narrative purposes it can serve, and leaving the audience with a cheeky wink.