Archived posting to the Leica Users Group, 2015/05/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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