Review on YONGNUO YN660 Speedlite: Versatile Wireless Manual Flash with GN66 Power for Canon Nikon Pentax Olympus by Stephanie Armijo

Bought two YN660s on first use, one flash stuck when fired at only 1/1 FULL power. I noticed this during the shoot when my pictures were completely overexposed and when I checked the flashes both were set at 1/32 power, one was firing at FULL power. Thanks to Revain, I was able to get the Flash back. I've ordered another one hoping I don't receive another faulty flash. I use TWO YN660 and TWO YN560 IV. I prefer the YN660 due to the much faster recharge time on this flash. The flash is bigger and brighter. I prefer the YN660 YN560IV controls.