This timelapse is called Light Writing Proposal, and was created by Derick Childress on Vimeo. It is 00:03:06 long. The last time we checked (on March 31st, 2015), it had around 430,000 plays on Vimeo
This long exposure, and the making of footage, were shot over three nights in Raleigh, North Carolina as a proposal to Emily Kern.
The words “Emily, will you marry me?” Were spelled out in light writing. The final image is made up of approximately 800 individual 10 second exposures.
Both the Time lapse and video were shot with Canon 7Ds.
I’ve put a description of the process of up at