Archived posting to the Leica Users Group, 2015/05/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Seems as plausible as any. Jim Nichols Tullahoma, TN USA On 5/10/2015 2:33 PM, Philippe wrote: > contrary to mechanical shutters where the slit is either vertical or > horizontal, e-shutters act like BOTH vertical and horizontal curtains at > the same time - they record points, not lines > they scan one line after the other > at the next line, ultra fast objects have actually moved one block further > > xxxxxxxxxxxxxxxxxxxxOxxxxxxxxxxx > xxxxxxxxxxxxxxxxxxxxxOxxxxxxxxxx > xxxxxxxxxxxxxxxxxxxxxxOxxxxxxxxx > xxxxxxxxxxxxxxxxxxxxxxxOxxxxxxxx > xxxxxxxxxxxxxxxxxxxxxxxxOxxxxxxx > > ChronophotograPhilippe > > > > >> On Sun, May 10, 2015 at 11:11 AM, Frank Filippone <red735i at verizon.net> >> wrote: >> >>> You are overthinking the solution. >>> >>> A vertically moving shutter, at 1/1800 ( usually this starts around 1/125 >>> of >>> a second, depending on the camera) of a second uses a SLIT to allow light >>> to >>> reach the "film". So the bottom of the film and the top are actually >>> exposed at different times. >>> >>> Marry that fact with a fast horizontally moving subject, and you get >>> ovalized race car wheels, elongated race cars with funny angles in them, >>> and >>> baseball bats that bend. >>> >>> In the past, with horizontally moving shutters ( Film Leicas for example) >>> the effect was quite common and exciting. >>> >>> I guess the "Kids" around here have never photos from the 30's and >>> before ( >>> think Speed Graphics, which did have a vertically moving slit shutter) >>> with >>> the same effect. >>> >>> Nothing is really new, just new to the beholder. >>> >>> Frank Filippone, showing his age..... >>> Red735i at verizon.net > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >