Included Item Details

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B&H# SIEF610STP MFR# F19109
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With a powerful guide number of 200' at ISO 100 and 105mm, the Sigma EF-610 DG ST Flash works with Pentax P-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.

Built-in catch light panel
Red-eye reduction mode
Manual flash power settings of 1/1 and 1/16 power
Auto power off setting
Battery life of 120-160 flashes
Mount Shoe
Guide No. 200.13' (61 m) ISO100 at 105 mm position
Exposure Control Manual/TTL
Vari-Power 1/1 - 1/16
TTL Dedication Yes
Bounce Head -7° to +90°
Swivel Head 270°
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
Flash-ready Indicator Yes
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
Sigma EF-610 DG ST Flash for Pentax Cameras
  • FS-11 Flash Stand
  • Carrying Case
  • Limited 1-Year Warranty