This detachable supplementary flash can be used to capture photographic subjects that are too distant for the built-in flash to illuminate. The range of the flash is approximately twice the range of the camera's built-in flash. This figure will vary according to such factors as the camera lens brightness (f/number), the zoom setting and the ISO speed setting.
Features
Device Type: Datachable Flash
Guide Number: 18
Compatibility: PowerShot models 600, A300, A400, A95, G1, Pro 1, S200, S400, S500, SD10, SD20, SD30, SD550, SD600, SD700 IS, and many more. For a complete compatibility list, please refer to the manufacturer site.