Re: OT: Zoespokes
On Mon, Dec 05, 2011 at 07:09:22AM +0100, mike wilson wrote: On 02/12/2011 18:27, Bob W wrote: Much better than pink shiny tassles: http://www.photoweeklyonline.com/awesome-bicycle-animation/ I wonder if they actually work as you view them in real life. Even zoetropes had a rudimentary shutter. There's only one way to find out, I suppose Not really necessary, IMO. It's long been known that film/video introduces aliasing artifacts like this - the best-known example is probably the wagon wheels in westerns, which appeared to rotate very slowly when filmed. When viewed in real life, of course, no such effect was visible. I'd bet these zoespokes only work on video (or, presumably, film). They are probably also extremely sensitive to the speed at which the wheel was turning; a key feature of a real zoetrope is that the viewing shutter is synchronised with the image frame rate. -- 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.
Re: OT: Zoespokes
on 2011-12-05 11:27 John Francis wrote I'd bet these zoespokes only work on video (or, presumably, film). They are probably also extremely sensitive to the speed at which the wheel was turning; a key feature of a real zoetrope is that the viewing shutter is synchronised with the image frame rate. you can see effects like this under streetlights (or under fluorescent if you are biking indoors) because of the 60Hz flicker; another approach is to emit light directly from the rotating object: http://www.ladyada.net/make/spokepov/ -- 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.
Re: OT: Zoespokes
On 02/12/2011 18:27, Bob W wrote: Much better than pink shiny tassles: http://www.photoweeklyonline.com/awesome-bicycle-animation/ I wonder if they actually work as you view them in real life. Even zoetropes had a rudimentary shutter. There's only one way to find out, I suppose -- No fixed Adobe -- 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.
Re: OT: Zoespokes
Those were pretty cool optical illusions. On 12/2/2011 12:27 PM, Bob W wrote: Much better than pink shiny tassles: http://www.photoweeklyonline.com/awesome-bicycle-animation/ B -- Don't lose heart! They might want to cut it out, and they'll want to avoid a lengthily search. -- 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.
Re: OT: Zoespokes
From: Bob W p...@web-options.com Much better than pink shiny tassles: http://www.photoweeklyonline.com/awesome-bicycle-animation/ B That's pretty neat! More after my seizure subsides... Tom C. -- 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.
