On Fri, 3 Apr 2015 00:33:29 -0400 Sean Breheny wrote: > but another possibility is that it is your eye .... and a variant: Maybe the spark's direction at the 'hotspot' is directly towards or away from you. In that case, the intensity would he higher too. John --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .