Setting up onboard monitoring and HD output on Canon 5D Mark III for aerial camera work

Gear

ZephyrCan I fly my Alexa or RED on a Zephyr?389

Master SeriesIs a used Master Series rig worth buying as a first big rig?191

BFDHow do I power my BFD receiver from my camera or sled?186

VoltCan I retrofit a Volt onto my existing sled or gimbal?168

ArtemisHow do I power my camera and accessories from an Artemis sled?166

MDRWhere can I mount my Preston MDR on my rig?143

ModulusIs there a Modulus option for HD wireless video?141

G-70Will my G-70 fit my vest, gimbal or sled?126

FI+ZCan I control iris and zoom wirelessly, not just focus?60

HU3Where can I get my HU3 repaired, refurbished or repainted?60

CineLiveHow do I pack and case my CineLive rig for transport?54

G-70XHow does the G-70X compare to Pro Titan, Xarm and other arms?46

Trinity 2Is Trinity 2 SUP 3.0 firmware safe to install or buggy?46

Ultra VestWhich vest should I choose for my body size, comfort and operator type?39

2013Cameras (Film/Video/HD) forum

13 years old. Gear and prices may have changed since.

The Mark III outputs clean uncompressed HDMI at full HD resolution with 4:2:2 8-bit color when running the latest firmware
Unlike the Mark II, the Mark III does not downgrade image resolution when recording video
A HDMI to SDI converter can be used with the Mark III to feed a standard SDI workflow
External monitors can be mounted using a hot-shoe arm extension to position them off the side of the camera body
Small HD monitors and other third-party displays offer power connections that accept D-tap connectors, allowing battery plate solutions to power multiple components

Experience reported is specific to Mark III with updated firmware
The original poster had previous issues with the Mark II losing image quality that motivated this inquiry