This document describes the features and characteristics of the Canon Macro Ring Lite MR-14EX and Macro Twin Lite MT-24EX macro flash units, as well as their compatibility with cameras.
This manual provides complete instructions for using the Canon MR-14EX Macro Ring Lite and MT-24EX Macro Twin Lite flash units. It covers basic operation, flash photography modes, wireless multiple‑flash setups, and safety precautions.
The units work automatically with EOS cameras that support E‑TTL I, E‑TTL, or TTL flash metering. The guide also includes reference tables, nomenclature diagrams, and contact information for Canon support worldwide.
| Filter mounting thread diameter | 58 mm |
|---|---|
| Flash metering compatibility | E‑TTL I, E‑TTL, TTL |
The manual assumes use with a Type‑A camera (compatible with E‑TTL I or E‑TTL). Type‑B cameras (TTL only) are also supported; see page 41 for details.
When the MR-14EX or MT-24EX is attached to an EOS camera, almost all automatic exposure control for flash photography is handled by the camera.