The Pentax AF-540 FGZ is a powerful and versatile flash unit designed for Pentax DSLR cameras. It features a maximum guide number of 54 at ISO 100, a zoom head that covers a range of 24-85mm, and a variety of advanced features such as wireless TTL flash control, high-speed sync, and a built-in LED light for video recording. The AF-540 FGZ is ideal for photographers who need a reliable and powerful flash for a wide range of shooting situations, from portraits and weddings to sports and action photography. Our range of screen protectors for the AF-540 FGZ helps to keep the flash unit's LCD screen safe from scratches, smudges, and other damage, ensuring that it remains in top condition for years to come.