Review on YONGNUO YN2 0X III Teleconverter Extender by Michael Reynolds

The covers were roughly made. Not checked yet. Update: Tested with Canon EOS 6D + 70-200mm f/4 L IS autofocus (AF) WORKS even at f/8 (2 stops down). Indoor photos must be on a tripod (otherwise there is noise from the high ISO) Image quality is better than I thought. Pros: * inexpensive * autofocus still works at f/8 (with my 6D) * sharper than I thought Cons: * roughly made caps (poor fit) * overexposure issues as mentioned by others (but you can easily adjust +-EV to your camera) * There is still image quality loss with this extender