The EF-530 DG SUPER flash from Sigma is designed to adapt to the most modern TTL digital camera and traditional camera systems, allowing you to produce high-quality photographs in any situation without hindering your creativity.With an elevated guide number of 53, this flash functions automatically for easy use. The lens is coupled with a zoom head to adjust the illumination angle. The EF-530 DG SUPER features an effective focal range of 24 to 105 mm. Using the built-in wide panel, the flash can cover the angle of the 17mm focus. Photographers will be pleased with the advanced features, including predictive flash, pulse flash, TTL wireless exposure control, high-speed Synchro flash (FP), rear-curtain sync flash and manual mode. The head can be turned upwards by 90, 180 to the left and 90 to the right. It can also be lowered 7 degrees, which is ideal for close-up shots. Finally, when the flash is completely charged, an indicator light appears in the camera&rsquos viewfinder, showing the level of exposure. The EF-530 DG SUPER also features an automatic sleep mode to save energy. Runs on 4 AA batteries or rechargeable batteries (not included).