Flash YN600EX-RT II

The YN600EX-RT II is an enhanced version of the original model, now with support for Canon’s optical transmission wireless master flash function.

Key Features:

Wireless Control:

Optical and Radio Transmission: Use the YN600EX-RT II as a master unit to control flash modes, exposure compensation, flash ratio, stroboscopic settings, and frequencies in both optical and radio transmission modes.
RT System Support:

Master and Slave Modes: Functions as both an on-camera master and remote slave unit within Canon’s RT system, with support for Group (Gr) mode.
Compatibility:

With YONGNUO and Canon Systems: Compatible with YONGNUO YN-E3-RT, Canon’s 600EX-RT/ST-E3-RT wireless signals. Can trigger other YN600EX-RT or 600EX-RT II units and display flash groupings and recycling information. Supports remote TTL, M, and Gr flash modes.
High Performance:

Guide Number: GN60 @ ISO100, 200mm.
High-Speed Sync: Supports high-speed sync TTL and manual flash with a maximum sync speed of 1/8000s.
Firmware Upgrades:

USB Interface: Equipped with a USB port for firmware upgrades. Download updates from the Yongnuo official website.
Wireless Optical Slave Function:

Compatibility: Supports optical master signals from YONGNUO, Canon, and Nikon. Includes S1 and S2 pre-flash cancel modes.
Zooming Options:

Auto and Manual Zoom: Adjust flash coverage automatically or manually from 20mm to 200mm.
Custom Settings:

Automatic Saving: Parameters are saved automatically when turned off. Users can customize settings through the Fn function.
Charging and Power:

Ultrafast Recycling: Features an ultrafast charging recycle system and supports external power supplies.
User Interface:

Large LCD Display: Comes with a big-size LCD screen for easy operation.
Standard PC Synchronous Interface: For connecting to various devices.