This is part of our behind-the-scenes series on a slow-motion, live-burn fire shoot shot on a Phantom Flex4K.

Nothing in the room above is actually on fire. Nor is there any CGI. Nor was there a big budget or a huge team -- just a few filmmakers with a prototype Phantom Flex 4K camera and a goal of filming a tracking shot through a room on fire... without actually setting it on fire. Here's how director Brendan Bellomo and DP Greg Wilson set a room ablaze virtually using The Foundry Nuke in the Flex4K promo Let Me Know When You See Fire.

In case you missed it, here's the original piece: