With a powerful guide number of 200' at ISO 100 and 105mm, the Sigma EF-610 DG ST Flash works with Sigma S-TTL and offers users the ability to illuminate the subject or scene both on camera and off. The unit also has a zoom range of 24-105mm with full frame cameras and has a wide-angle panel that will extend this to 17mm. The head will tilt from -7 to 90° and rotate right 90° and left 180° for full bounce capabilities. And, it has wireless master and slave TTL functionality.
The flash also offers first and second curtain sync modes as well as a 5 to 7 second recycle time at full power. Additionally, it runs on 4 AA batteries and comes with a stand a case.
|Guide No.||200.13' (61 m) ISO100 at 105 mm position|
|Vari-Power||1/1 - 1/16|
|Bounce Head||-7° to +90°|
|Coverage||17 mm - 105 mm (Full frame)|
|Distance Range||1.64 to 16.40' (0.5 to 5 m)|
|Zoom Head||Full frame: 24 mm - 105 mm|
|Off Camera Terminal||Not Specified By Manufacturer|
|Recycle Time||Approximately 5 - 7 seconds|
|Flash Duration||1/700 sec @ Full Power|
|Compensation||-3 EV to +3 EV (in 1/3 and 1/2 EV steps)|
|Power Source||4x AA Alkaline, NiCad, Rechargeable Ni-MH Batteries|
|Dimensions (WxHxD)||3.0 x 5.5 x 4.6" / 77.0 x 139.0 x 117.0 mm|
|Weight||11.64 oz / 330 g without batteries|