My initial thought was to try to take pictures of a falling ball, but it’s too hard to get that to work consistently without setting up some kind of electronic trigger, and I wasn’t willing to do that. But, of course, a swinging pendulum will always be in a relatively narrow range of positions, making it a better moving target.<\/p>\n
So, the composite below is a bunch of shots of a yo-yo hung from the ceiling in our basement, swinging back and forth. The focus was set to manual, the f-stop maxed out, and I adjusted the shutter speed and ISO level to get approximately the same exposure each time. I got it in nearly the same position each time by the simple expedient of holding down the shutter button in continuous shooting mode and hoping for the best.<\/p>\n The colors are kind of wonky because I couldn’t find the dark blue plastic yo-yo we have somewhere, only one that’s clear plastic with writing on it. At the longer exposures, that’s blurred out enough to be nearly invisible without cranking the contrast way up.<\/p>\n I may re-do this at a later date, just to get cleaner images, but this is a decent proof-of-principle for the effect I wanted. It’s kind of impressive to me how fast the shutter can be and still produce significant blurring– this is only moving at a few meters per second, and yet there’s very definite blurring at a shutter speed considerably higher than the standard video frame rates. <\/p>\n Anyway, that was fun. And as a bonus, it explains why so many of my photos of the kids look kind of fuzzy…<\/p>\n","protected":false},"excerpt":{"rendered":" This one was a whole bunch of work for one smallish shot… So, in past rounds of “science-y things with my fancy camera,” I looked at the effect of ISO settings and apertures. This time out, I wanted to look at something moving, and the way that it blurs with increasing exposure time. My initial… Continue reading 152\/366: Fun With Motion Blur<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":10532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[684,663,238,7,50,11],"tags":[],"class_list":["post-10531","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-684","category-everyday","category-optics","category-physics","category-pictures","category-science","entry"],"_links":{"self":[{"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/10531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/comments?post=10531"}],"version-history":[{"count":0,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/10531\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/media\/10532"}],"wp:attachment":[{"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/media?parent=10531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/categories?post=10531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/tags?post=10531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Composite](\"http:\/\/scienceblogs.com\/principles\/files\/2016\/02\/sm_motion_blur_composite.jpg\")
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