The easiest way to explain it is to describe how the film version works. The camera has a vertical slit the height of the frame. The film moves horizontally past the slit. Anything that is not moving will read as a streak, because from the film's perspective, it's always in the same position as the film moves.
Anything that is moving is only recorded as it passes in front of the slit. For racing, it's used to see who passes the finish line first. The first person to cross is clearly shown, and each successive person to cross in front of the slit records farther to the side of the frame. I don't know how the digital version works, maybe a strip sensor that is sampled many times per second and composited in-camera. I wonder if it wouldn't be possible to do something like this for normal cameras and smartphones. It's really quite ingenious, and when you use it as an art tool, you get some striking imagery. The man and horses is my favorite of the set. On Fri, Oct 19, 2012 at 3:38 PM, Steven Desjardins <drd1...@gmail.com> wrote: > Those are mesmerizing, especially the dancer and swimmer images. I'm > still trying to wrap my head around why they look like they do. This > may involve beer. > > On Fri, Oct 19, 2012 at 1:55 PM, Collin Brendemuehl > <coll...@brendemuehl.net> wrote: >> http://www.slate.com/blogs/behold/2012/10/15/jay_mark_johnson_s_very_unusual_camera_emphasizes_time_over_space.html >> >> Sincerely, >> >> Collin Brendemuehl >> "He is no fool who gives what he cannot keep to gain what he cannot lose" >> -- Jim Elliott >> >> >> >> >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Steve Desjardins > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
