YONGNUO YN-E3-RT II On-Camera Flash Speedlite Transmitter Flash Trigger Compatible for

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• Features: The YONGNUO speedlite transmitter YN-E3-RT II is a transmitter for wireless flash shooting. It can control up to 5 groups 15 units of speedlites that have a wireless multiple flash shooting function using ratio transmission. Flash Modes: ETTL/M/Multi/GR4/ flash modes. supports 1st curtain, 2nd curtain Only in M mode , high speed sync. New designed select dial and display interface for easier operation, supports remote control to set the focal length ZOOM of the slave flash. Firmware can be updated via USB Micro USB , Built-in AF assist beam emitter, transmission range is 100m. Two-way 2.4G radio communication, fully compatible for ST-E3-RT/600EX-RT/YN-E3-RT/YN968EX-RT/YN600EX-RT II /YN686EX-RT/YNE3-RX. Specifications: Type: On-Camera Speedlite Transmitter Exposure Control Syestem: E-TTL II/E-TTL Autoflash, Manual Flash, Stoboscopic Flash, Gr Flash Frequency: 2405-2475MHZ Modulation System: Primary Modulation: OQPSK, Secondary Modulation: DS-SS Channel: Auto, Ch. 1-15 Wireless Radio ID: 0000-9999 Slave Unit Control: Up to 5 Groups A/B/C/D/E , Up to 15 Units Transmission Distance: Approx. 100m Flash Ratio Control: 1:8-1:1-8:1, 1/2-Stop Increments Flash Exposure FEB: 3 Stops in 1/3-Increments When used with flash exposure compensation Manual Flash: 1/1-1/128 Power 1/3-stop increments Stroboscopic Flash: Provided 1-500Hz Flash Exposure Confirmation: Flash Exposure Confirmation Lamp Lights Model Flash: Fired with Camera' Depth-of-field preview button. Linked Shooting: Provided Custom Functions: 9 AF Assist Beam Emitter: Provided Firmware Update: Provided Power Source: 2 AA/LR6 Alkaline Batteries Ni-MH Batteries Not Included Wireless Flash Shooting: Approx. Time: 10 Continuous Hours Power Saving: Power off After 5 min, of idle Operation Package Size: 11 * 9 * 7.5cm / 4.3 * 3.5 * 3.0in Package Weight: 240g / 8.5oz Packing List: 1 * Speedlite Transmitter 2 * Shutter Cable LS-Micro/C1 & LS-Micro/C3 1 * Storage Bag 1 * User Manual English & Chinese