# Bullet time > Effect in which many cameras around a subject capture the same instant, so a frozen moment can be viewed from a moving viewpoint. Also known as: multi-camera array, time slice, frozen moment. Category: Photography techniques. Bullet time is a visual effect in which a ring or arc of cameras around a subject captures the same instant from many viewpoints. Played in sequence, the images look like a camera moving around a moment frozen in time. The technique is also known as a time slice or a frozen-moment shot. The effect depends on precise synchronisation. Every camera must fire at the same moment, or with a deliberate offset for a slow-motion variant, even though different cameras react to the shutter signal with different delays ([shutter lag](https://www.photorobot.com/glossary/shutter-lag)). The number of cameras sets how smooth the movement looks, which is why arrays of dozens of cameras are common. ## How PhotoRobot uses it One PhotoRobot [SynchroBox](https://www.photorobot.com/glossary/synchrobox) connects up to 8 cameras, and several units can be linked into a cluster, so a single system can fire dozens of cameras placed around a subject – for example 36 cameras around a model jumping on a trampoline, freezing the jump as a spatial shot. This is independent of the [MultiCam](https://www.photorobot.com/glossary/multicam) arch, whose mechanics allow up to 7 cameras at once. ## See on photorobot.com - [SynchroBox setup user guide](https://www.photorobot.com/manuals/synchrobox-setup) ## Related terms - [SynchroBox](https://www.photorobot.com/glossary/synchrobox): PhotoRobot multi-camera controller that fires each camera with its own advance; up to 8 cameras per unit, units can be linked. - [MultiCam](https://www.photorobot.com/glossary/multicam): PhotoRobot multi-camera arch that captures several elevations at once for multi-row 360 and 3D photography. - [Shutter lag](https://www.photorobot.com/glossary/shutter-lag): The delay between triggering a camera and the moment the image is actually exposed. - [Flying camera effect](https://www.photorobot.com/glossary/flying-camera-effect): Video in which the camera seems to fly around the product, made by combining rotation with camera movement. - [On-model photography](https://www.photorobot.com/glossary/on-model-photography): Photographing garments or accessories worn by a live model.