Roy, It is a ping pong ball. I used a Triopo flash that at very low power operated at 40 flashes per second but at that rate it only flashed for 1 second. Counting the separate images yields 40. The camera shutter was open for longer than that ... maybe 2 or 3 seconds. The high quality velvet background absorbed so much light that it did not bleed through the individual images ... hardly anyway. Andy ________________________________________ From: photoforum-request@xxxxxxxxxxxxx <photoforum-request@xxxxxxxxxxxxx> on behalf of photoroy6 <photoroy6@xxxxxxx> Sent: Sunday, August 31, 2025 2:20 PM To: photoforum@xxxxxxxxxxxxx Subject: RE: August 31 PF gallery updated Andy, Boucing tennis ball #49? This message was sent to subscribers of <b>PhotoForum educational network</b> ("https://lists.rit.edu/sympa/info/photoforum"). Unsubscribe: https://lists.rit.edu/manage/unsubscribe.php?listname=photoforum&email=list-photo@xxxxxxxxxxx&uuid=&id=CH3PR16MB6404D265E29DE3A2A66C5A3CCC07A