The GODOX Lux Senior Retro Camera Flash is a diminutive yet powerful light source that is perfect for use with FUJIFILM, Canon, Nikon, Olympus, and Sony cameras. This retro-style flash has a simple dial that makes it easy to Adjust ISO, aperture, power level, and shooting distance. The flash also has an Auto Mode that defaults to f/2.8 at ISO 100. The optical mode offers S1 and S2 settings. In S1 the flash will fire in response to another manual or TTL flash. In S2 the Retro Flash will respond similarly, but ignore the initial flash. This product is small enough to be regularly mounted on your camera and runs on a rechargeable battery. It’s the perfect tool for anyone who wants to add a little extra light to their photography.