Electronic Flash Units
Ronkonkoma, NY—Sigma Corporation of America’s new 46 megapixel flagship SD1 DSLR launched with two electronic flashes.
Sigma’s new EF-610 DG ST electronic flash is designed to work with the latest TTL autoexposure systems of popular digital and film SLRs and has a guide number of 61/m (200/ft). Its auto-zoom function automatically sets the optimum illumination angle in accordance with a lens’s focal length from 24-105mm; when the built-in wide panel is used, the flash covers the angle of 17mm.
For bounce flash, the flashgun head can be tilted up 90 degrees, to the left 180 degrees, or to the right 90 degrees. It can also be tilted down 7 degrees for close-up photography. In addition to automatic mode, the flashgun has a manual flash mode, making it possible to set the flash power to full or 1/16. It also incorporates an auto power-off function to save battery power.
Additionally, the EF-610 DG Super electronic flash was introduced, featuring: a guide number of 61; compatibility with the latest TTL autoexposure systems of digital and film SLRs; an auto-zoom function; bounce flash capabilities similar to the EF-610 DG ST; a modeling flash function; multi-pulse flash; TTL wireless flash; FP (high-speed) flash; rear-curtain synchro flash; manual flash mode, which allows the flash power level to be set by up to eight stops; and an auto power-off function. sigmaphoto.com