Sigma EF 500 DG Super Flash for Sigma SLR Cameras

The Sigma EF 500 DG Super Flash for Canon SLR Cameras is designed to work with both AF 35mm SLR and Digital SLR cameras of popular manufacturers for advanced flash photography. It has a maximum guide number of 165 feet, or 50 meters, at a 105-millimeter focal length (ISO 100). The projection angle of the flashlight is set automatically to match the lens' focal length, ranging from 28-millimeter wide-angle to 105-millimeter medium-telephoto. It also incorporates a built-in diffuser that expands the angle of illumination down to that of a 17-millimeter lens. The EF 500 enables full-automatic flash photography by TTL automatic flash exposure control. It now includes S-TTL flash photography for Sigma, 3-D multi-sensor balanced fill-flash function, and i-TTL flash photography for Nikon, E-TTL II flash photography for Canon, ADI flash photography, and P-TTL flash photography for Minolta cameras. For bounce flash, the EF 500 can be tilted 90 degrees upwards and seven degrees downward for close-ups. Also it can be swiveled 180 degrees to the left and 90 degrees to the right. It incorporates "modeling flash" mode to provide proper light distribution to check the shadow of the subject. The multi-pulse flash features enable reduced power setting from 1/4 to 1/128 in six steps, and the pulse frequency of the flash can be set from one Hz to 199 Hz. The EF 500 also incorporates wireless TTL flash photography, slave flash photography, and FP flash photography (synchronized with high shutter speeds). In addition, manual flash can be set at eight output power levels. The covering focal length of the flashlight can be seen on the LCD panel, and a flash-ready signal can be seen in the viewfinder. The EF 500 also incorporates an auto power off system.