As an amateur photographer I am 100% satisfied with the YN560 III flash of Yongnuo. The emitted light output can be very fine-tune as needed. The internal radio receiver is just great. The two transceiver RF-603 C I ordered the flash is working properly. Since I own the Sony Alpha 57, but I had to make one small change at a transmitter. The description of this: see YouTube. In 10 minutes you're done, and works just fine. What I've ordered is a trigger-cord (Cable-F replace SONY RM-S1AM) from JJC. A hot shoe adapter (CANON SONY) is also compulsory. Now Everything works to my complete satisfaction. A clear recommendation for all amateur photographers, or who want to be there.
