User Manual
Controlling Flash Coverage (Zoom) 
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5.  Press your camera’s shutter-release button to take the picture. 
Note: For best results, a handheld light meter is recommended when using the manual ash mode.
Important! To avoid overheating and damaging your ash unit, please wait for at least 10 minutes after 20 
continuous ashes at full power. The ash will automatically shut off if it gets overheated. 
Controlling Flash Coverage (Zoom) 
The VS-570OP’s angle of coverage can be adjusted (“zoomed”) to match the focal length of your lens, so that 
your image is evenly illuminated from edge to edge. 
When the ash zoom setting is adjusted, the position of the reectors inside the ash head shift in order to 
make the angle of coverage wider or narrower. 
The available zoom positions are 24mm, 28mm, 35mm, 50mm, 70mm, 85mm, and 105mm. 










