Powerful and compact, the mecablitz M400 Flash from Metz is designed to pair perfectly with smaller mirrorless cameras. This model offers full TTL support for Olympus/Panasonic for offering numerous automatic features. Optimized for maximum light output, the M400 features a guide number of 131' at ISO 100 and the 105mm zoom setting. It also offers a zoom range of 24-105mm with a built-in diffusion panel that expands coverage to 12mm lenses. Additionally, for hybrid shooters, the M400 has an LED video light with six output levels that is useful for video.