Z-5080 Promethean vision

Z-5080 Short-Range Spectrum Augmenter/Vision (Z-5080 SRSA/V), also known as Promethean vision, is a Forerunner short-range, full-spectrum vision enhancement system.

Design details
The Promethean Vision module itself resembles other similar equipment of Forerunner origin. When used, it enables the user to detect shapes and movement through solid barriers, and can be leveraged in human-developed MJOLNIR Powered Assault Armor in conjunction with Visual Intelligence System, Reconnaissance Version 4.0.

Its effectiveness is somewhat limited by its difficulty and inability to perceive the use of active camouflage systems and the hologram decoys, respectively, alongside the noise it produces when it is in use.

Usage
Promethean vision was originally developed for use by the Promethean soldiers of the Forerunner rate of Warrior-Servants. Even post-composition, Knight Commanders continued to make use of Promethean Vision modules.

In the modern day, Promethean vision modules were acquired for use by John-117 with his MJOLNIR Mark VI MOD armour during the Battle of Requiem in July 2557. They were later used by Spartan Operationss personnel during the Requiem Campaign the following February, with their usage contributing to a number of UNSC victories in the Requiem theatre. A functionally similar mimic of the Promethean vision module known as the "Viper Shroud" has been developed by the Watershed Division for United Nations Space Command usage. The module was designed for use on the STREET VIPER helmet. The Viper Shroud consists of a multi-target acquisition and cueing system.

Halo 4
The behavior of Promethean vision differs between game modes. In War Games, Promethean vision has far greater difficulty detecting enemies using active camouflage. A player utilizing active camo will not glow orange, but rather appear blue in the manner a player appears if they are utilizing the Stealth Support Upgrade. Promethean vision will also not differentiate between a player and a hologram, making it difficult to tell them apart. Interestingly, if a player utilizes both the Stealth upgrade and hologram ability, their hologram will still display bright orange while the player is blue, allowing alert players to differentiate between the two.

In campaign and Spartan Ops, however, Promethean vision has no difficulty detecting active camouflage. Targets still glow bright orange, even when using active camo. This makes Promethean vision incredibly useful for detecting Covenant units utilizing stealth technology.

Trivia
Promethean Vision is the only armor ability which can be used while carrying a detached turret. Using any other armor ability will cause the player to drop the turret.

List of appearances

 * Halo 4
 * Spartan Ops
 * Halo Infinite
 * Season 03: Echoes Within