Yongnuo Speedlite YN-568EX II Flash Review
YN-568EX II is the 2nd generation of the YN-568EX.The difference between these two generations is that the YN-568EX II can be a Master flash, while the YN-568EX can’t.
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Yongnuo Flash Speedlite,Video Light,Flash Trigger for Canon Nikon Sony Pentax Olympus Vivitar Etc