YONGNUO YN600EX-RT SPEEDLITE

• Guide Number 60m (ISO-100, 200mm)
• Support for Canons RT Wireless System (Master and Slave Modes)
• Zoom head up to 200mm
• E-TTL and Manual Power Control (on or off camera with compatible RT device)
• HSS (High Speed Sync) to 1/8000 Second
• Canon and Nikon Optic Wireless Slave Modes (backwards compatibility)
• S1 and S2 Optical Slave Modes
• PC Sync Port
• External High Voltage Battery Port
• USB for firmware updates
• Radio Noise Scanning
• 15 Physical Channels, 1 Auto Channel, Up to 10,000 customisable photographer ID
• Fast (Canon style) hotshoe lock mechanism
• Autofocus assist beam

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