Hersmay CY-20 Universal Hot Shoe On-Camera Flash Speedlite Electronic Speedlight with Sync Port for Nikon Canon Panasonic Olympus Pentax Alpha Digital DSLR Camera Flash Light

Specification: 1, adjustable lampholder 2, hot shoe holder 3, battery door 4, testing switch 5, hot shoe lock 6, prepare indicator lamp 7, power switch 8, in-phase jack Technology Capability 1,flash index: GN20m (ISO100,DIN21) 2,color temperature: 5600k ( for sunlight ) 3,efficient illuminating beam: horizontal 60°,vertical 40° 4,power: 1.5v double A battery (Not Included) 5,Back time interval: 7 seconds 6,flash continuous time: 1/1000s(manual) 7,size: 65×60×98mm 8,weight: 100g Camera shutter adjustment The camera with inter-mirror shutter can adjust to any speed.While the camera with focal plane shutter can just adjust to the speed profile of“X”.(Generally 1/60s).Or you can adjust your speed according to your instruction. How to use: 1,determine the distance between camera and the main feature by your eye,and then find this distance on the upside of the exposure meter. 2,find the photonasty of your camera from the first vertical line of the left of the exposure meter.The joint of this two lines is approximtely the apertu:re number. 3,you can get your aperture number from the following formula? Index(GN)=aperture(F)×distance(L) Eg.photonasty is ISO100/DIN21,the distance between the camera and the main feature is 5m,then the aperture is approximately F/4 Shoe suitable for all ordinary digital camera (such as 602,717,750, G3, etc.) and traditional cameras. except Minolta and Sony anti-intercalation Shoe. Even if there is no hot shoe,through the primer flash can also be used successfully.