Yongnuo is a Chinese company that has mistakenly been stated as to be creating knock offs–which is a massive misinterpretation. They mostly specialize in radio transmitters and flashes. We previously reviewed the Yongnuo 560 II, and upon hearing the reports of the company putting radio transmission integrated into their flashes, I had to try one of the brand new 560 III flashes. The version that I purchased was specifically for the Micro Four Thirds system: and in this case the Olympus OMD EM5.
However, I ended up using it a whole lot more with the Panasonic GH3 due to a review period with the camera and lenses loaned to me by the company.
And if you’re invested in any mirrorless camera system (not just Micro Four Thirds) this super affordable flash and the RF-602 trigger is well worth it.