Good explanation. I missed the idea that the film was moving and not the slit. I'm still having the beer.
On Fri, Oct 19, 2012 at 3:50 PM, David Parsons <parsons.da...@gmail.com> wrote: > 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. -- 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.
