The Sigma EF 500 DG Super Flash is a high-quality shoe mount flash designed for Nikon cameras. It features a built-in diffuser and bounce card for versatile lighting options, as well as TTL and AF Assist Light capabilities for accurate and efficient flash photography. This unit is suitable for both digital cameras and DSLRs, making it a versatile and essential accessory for photographers looking to enhance their lighting capabilities. Additionally, the bonus items included with this flash add extra value to this excellent Sigma product.