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Specifications

H-550 can be use for the following models:
Model
Use for Camera
Use for Flash
H-550 For Canon
Canon series cameras
OEM Flash
Compatible Flash
Studio Flash
H-550 For Nikon
Nikon series cameras,
PENTAX series cameras,
Samsung series,
FUJIFILM series

Notes: The above two models are compatible with each other, apart from the different hot shoe which supports the TTL pass-through function of the camera flash.

Main Features:
1. Each unit can act as both Transmitter and Receiver.
2. Wireless “single shooting”, “continuous shooting”, “B gate shooting”. Wired shutter shooting.
3. Flash wake-up flash (Can also wake up Nikon SB-600/700/800/900 etc series flashes).
4. Wirelessly sync triggering of camera flash, Studio flash, Out-door flash
5. Support TTL pass-through (Not with e-TTL function)
6. Provides 16 independent channels to be used in a busy environment where many photographers use flash at the same place and time.
7. One master camera to control multiple cameras for photographing
8. Provides 3 individual flash groups and 7 different group combinations.
9. Basic triggering mode: sync speed is up to 1/250S
10. High-speed sync: high up to the maximum camera shutter speed -1/8000S (at full flash power).
Note: The following cameras have been tested that can support this function:
Nikon D80/ Nikon D200/ Nikon D300 / Nikon D700 / Canon 600D/ Canon 550D/ Canon 500D/ Canon 450D/ Canon 350D/ Canon 40D/ Canon 50D/ Canon 5D/ Canon 5D MAKEII.
 

PS: : Please note that if your camera is Nikon D90 / Nikon D 7000 / Nikon D 300S D5100 etc models, you may need one more H-550/H430TX as hand-hold remote control unit to achieve HSS function.