Description: Dedicated clip-on transmitter for E-TTL/E-TTL II wireless flash system.
Features:
E-TTL Compatible
Built-in AF-Assist Beam
Sets and Controls Flash Rations
High-Speed FP Flash
E-TTL Wireless Autoflash Control
Specifications:
Type: 550EX-dedicated, clip-on Speedlite transmitter with direct contacts.
Compatible Cameras: Type A EOS cameras (E- TTL, autoflash); Type B
EOS cameras (Manual flash)
Sync Speed: High-Speed Sync (FP flash): Enabled with high-speed sync
mode.
Flash Exposure Confirmation:
1. Before flash fires during FE lock Adequate flash exposure indicated by the
flash exposure level icon lit in the viewfinder. Insufficient flash exposure
indicated by the flash exposure level icon blinking in the viewfinder.
2. After flash fires ST-E2's flash confirmation lamp lights in green for 3 sec.
AF Assist Beam:: Compatible with EOS-3's 45-point Area AF and 28mm
and longer lens focal lengths. Effective Range: Approx. 0.6 to 10m/2.0 to
16.5 ft along the periphery (in total darkness).
Mfr.# 2478A002
