Viltrox JY610 is a mini speedlight flash unit which is leight weight on any camera. Its guide number is GN 27 (in focal length 50mm at ISO 100 in meters). The flash is especially good and handy for full frame DSLRs like Canon 5D Mark II and Canon 5D Mark III which has no built-in flash. Its small size can make it possible even to carry it in your pockets!.
Here are the specifications:
Type : On Camera standard hot shoe flash.
Flash Mode: Manuel only GN No : 27 (ISO 100 in meters at 50mm at extended mode, otherwise GN is 22 at normal 28mm)
Vertical angle : 60-75-90 degree Internal power : 2 X AA size Alkaline batteries
Weight : 145 gram (without battery)
Flash head is tilted upward at 65 degree. And the back view of the flash. The flash has simple one slide lock button. Flash head at extended mode on the camera. GN is 27mm at this mode. And the back view of the flash on the the camera. Please note : the shape is as same as the Canon 270EX , but this flash doesn’t have the TTL function .