FLASH REVIEW
Camera Flash / Speedlight: Canon 550EX Speedlite Flash Unit Flashgun
| Model Name: Canon 550EX Speedlite Flash Unit Flashgun | |
|---|---|
| Image: |  |
| Fivercam Price (used) UK | |
| eBay Price (used) UK | |
| Release Date | |
| Strenght / Power | |
Guide Number (ISO100, meters)  | Normal Mode (ISO 100)High-Speed Sync (FP Flash, ISO 100) |
| Power Level Switching (Vari-power Range) | |
| Head & Coverage | |
| Bounce (Up-Down) Head Movement | |
| Swivel (Rotation) Head movement | |
| Focal Length Coverage | 24mm (APS-C 15mm) |
| Auto Zoom Head | |
| Flash Related Functions | |
| Flash Durations | |
| Flash Modes(TTL) | E-TTL II/E-TTL |
| Flash Exposure Compensation / Correction | |
| Secondary Illumination | |
| Wireles Flash | |
| Wireless Operation | |
| Wireless Groups | |
| Wireless Channels | 4 |
| Remote Timing Modes | 3 |
| Other Features | |
| Mount | Hot-shoe mount flash |
| Off Camera Terminal / External Connectors | |
| Included Accessories | |
| Other Functions | |
| Power Source & Recycle Time | |
| Power Source - Batterry | |
| External Power | |
| Minimum Recycle Time (Charging time between shooting) | |
| Battery Life | Approx. 100-700 (flashes per set of batteries) |
| Dimensions & Weight | |
| Dimensions | 3.1 x 5.4 x 4.4" (80 x 138 x 112mm) |
| Weight | 14.2 oz (405g) |
| More Details or Support Website: | Link |
| Item 1 | |
Fivercam Wiki information:
There are three ways to trigger off-camera flash units wirelessly: via infrared, radio signals or a hybrid method that involves both infrared and radio. The infrared system works like the TV remote; there need to be a direct line of sight for the signal to reach the destination. The radio signal has no line-of-sight limitations, but comes at a rather high cost. The hybrid system simply takes the infrared signal from the commander, converts it over to radio and then converts it back to infrared on slave units.
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