{"id":26980,"date":"2023-10-03T01:03:00","date_gmt":"2023-10-03T05:03:00","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=26980"},"modified":"2023-09-30T23:05:08","modified_gmt":"2023-10-01T03:05:08","slug":"hurry-up-and-slow-down-2","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/hurry-up-and-slow-down-2\/","title":{"rendered":"hurry up and slow down"},"content":{"rendered":"
\"\"<\/a>

a real time, ultrahigh-speed mapping (DRUM) camera. Pictured are researchers Xianglei Liu and Jinyang Liang working on the optical setup at INRS, Quebec<\/p><\/div>\n

Toronto<\/strong>.We usually cover old still photographic items in these posts, but today I take a look at movies (motion using the brain’s persistence and a rapidly projected series of frames).<\/p>\n

Frame rate<\/a> can noticeably affect a movie. When a movie is projected at the regular speed each frame is held briefly and projected giving what appears to be a natural motion on screen. If the movie camera records many frames in a given period, they appear to be projected in slow motion.<\/a> And contrarily, if there are too few frames recorded, projection makes the action appear in fast motion – ie. a person walking is recorded and then seems to run when projected. Or a slow process (i.e. multi day) can be speeded up on projection (time lapse<\/a>).<\/p>\n

These events, are often used for entertainment or education (time lapse). However; some short term events (sub second) are of scientific interest. How can they<\/em> be recorded and slowed down for projection? By using a special high speed camera! Unfortunately, physical limitations and media sensitivity set a boundary for the camera’s success.<\/p>\n

Now Payal Dhar<\/a> writes for the IEEE<\/a> journal about a Quebec team’s success using optics to extend that boundary in, “A Cheaper Ultrafast Camera Required Looking to Optics<\/a> The new \u201cDRUM camera\u201d can capture up to 4.8 million frames per second<\/em>“.<\/p>\n

Take a few minutes to read Payal’s article and see one direction scientific photography is going in the future (it will be history – in about 50-100 years – we are just a bit early here …). \u00a0Another tip of the hat to my good friend, George Dunbar, for spotting and sharing this unusual article in the IEEE Journal (the Journal is a free PDF download to IEEE members).<\/p>\n","protected":false},"excerpt":{"rendered":"

Toronto.We usually cover old still photographic items in these posts, but today I take a look at movies (motion using the brain’s persistence and a rapidly projected series of frames). Frame rate can noticeably affect a movie. When a movie … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[105,4446,4447,93,133],"class_list":["post-26980","post","type-post","status-publish","format-standard","hentry","category-activities-other","tag-digital","tag-high-speed-camera","tag-ieee","tag-movie","tag-video"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/26980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/comments?post=26980"}],"version-history":[{"count":5,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/26980\/revisions"}],"predecessor-version":[{"id":26987,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/26980\/revisions\/26987"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=26980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=26980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=26980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}