- centricslider-crankmechanismAsliderbuttonadjustsfocus.Thereisaneyelashlengthsliderbar.Thisworksaboutasexpected:Adjustingtheverticalsliderchangestherangeofthehorizontalslider.Thesliderdoesn’tnecessarilyhavetorepresenttimeitself.Tonight,thesliderwasag...
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