Twisted star trail effect using ZenFocus.
We used ZenFocus attached to the zoom ring. ZenController is programed in the AstroZoom mode to move the ring for a period of time. In this case, the effects are done moving the ring of the Canon EF17-40 F4L for 1 and 2 hours respectively. Closing or opening the zoom gives different effects.
Check other uses of ZenFocus: vimeo.com/117154231
ZenController can rule both ZenSlider and ZenFocus and all our future products as our soon to be release panning head.
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