Sigma Press Release 16/03/04

Fully automatic flash photography and easy-to -use operation.

ELECTRONIC FLASH EF-500 DG ST

New Electronic Flash EF-500 DG ST is designed to work with both AF 35mm SLR and Digital SLR Pentax cameras It has a maximum guide number of 50 at 105mm focal length (ISO 100/m) / 165/ft (ISO100/ft). Projection angle of the flashlight is set automatically to match the lens’ focal length ranging from 28mm wide-angle to 105mm medium-telephoto. It incorporates a wide panel that expands the angle of illumination down to 17mm focal length. It enables full automatic flash photography by TTL automatic flash exposure control it is compatible with P-TTL flash photography of *ist D cameras. For bounce flash it can be tilted 90degree upwards and 7degree downward for close-ups. Also, it can be swiveled 180degree to the left and 90degree to the right. In addition manual flash can be set to full and 1/16 output levels in 2 steps.

Covering focal length of the flashlight can be seen on the LED panel and the flash ready signal can be seen in the viewfinder. EF-500 DG ST incorporates auto power off system.