The YongNuo YN-560 Speedlite Flash is especially designed as a shoe mount flash for Sony. This professional flash covers the focal length range from 24 to 105 mm. The YongNuo YN-560 supports another flash by acting as a wireless slave flash over distances up to 30 meters indoors and about 15 meters outdoors. This feature-rich YongNuo Speedlite takes only 3 seconds to recycle after full power usage. The fast-charging YongNuo YN-560 professional flash supports high-speed continuous shooting of 8 frames per second at or below an output level of one eighth of the maximum power. To prevent equipment burnout during frequent use, the overheating function of this YongNuo Speedlite will automatically cause an emergency shutdown for about 3 minutes, before allowing you to restart it.