The Canon Speedlite 580EX II is a powerful external flash unit designed for use with Canon DSLR cameras. It provides photographers with a range of advanced features, including high-speed sync, wireless E-TTL, and manual flash control. With a maximum guide number of 190 feet at ISO 100, the 580EX II is capable of producing bright, evenly lit images even in low light conditions. It also features a built-in diffuser and bounce card for added versatility. The Canon Speedlite 580EX II is a popular choice among professional photographers and is compatible with a range of Canon accessories, including our screen protectors, which help to keep the flash's LCD screen free from scratches and damage.