SIGMA EF-610 DG ST electronic flash

With a powerful light output with a guide number of 61, the Sigma EF-610 DG ST electronic flash from Sigma covers focal lengths from 24 to 105 mm.

Designed for easy use, this EF-610 DG ST from Sigma works with the Canon E-TTL digital camera. This flash includes an autozoom function that automatically adjusts the illumination angle to the lens focal length.

What's more, the swiveling head of the EF-610 DG ST can be tilted up by 90 degrees, turned to the left by 180 degrees or to the right by 90 degrees.

In addition to automatic mode, the EG-610 DG ST flashgun also features a manual flash mode, making it possible to set the flash power to full or 1/16. Other features incorporated into this flashgun include its Auto Power-Off function that helps save battery power.