Archived posting to the Leica Users Group, 2015/05/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It would seem that the electrons have a mind, or pattern, of their own, either by design, or by unknown forces. It does present a puzzle, to which I feel there is no "simple" answer. Jim Nichols Tullahoma, TN USA On 5/10/2015 1:43 PM, Robert Adler wrote: > Just goes to show that one's elders have experience! :-D > > The camera was in silent mode, but I will leave it up to better minds than > mine to figure out the real cause. Certainly made the image much more > entertaining than without it, for me anyway. > > 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 >> >> Bob's X-T1 has a dual shutter, or two shutters if you prefer, Jim. >> >> The e-shutter captures light scanning as an old TV set created an image - >> which leaves time for a fast movement to trigger the effect. >> It is the one shutter that is used when shooting in silent mode. Hence my >> question. >> The phenomenon may also happen when the e-shutter supersedes the >> mechanical >> one i.e. for speeds above 1/4000 if I remeber well. >> >> The rest is chronophotography. >> >> Amities >> Ph >> >> >> >> Le 10 mai 2015 ? 18:18, Jim Nichols <jhnichols at lighttube.net> a ?crit : >> >>> Ha! No electronics involved in that one. I was thinking of those images >> as well. The Leica handbooks of the 1950s, which I have somewhere, use a >> similar image to demonstrate what can happen as the horizontally-traveling >> slit passes across the film opening, recording a moving wheel-type image. >> All purely mechanical. >>> Jim Nichols >>> Tullahoma, TN USA >>> >>> On 5/10/2015 11:06 AM, Philippe wrote: >>>> It is due to the electronic shutter >>>> >>>> Lartigue invented it ;-) >>>> http://www.exponaute.com/magazine/2012/10/01/art-et-automobile-un-sie >>>> cle-dinspiration/ >>>> >>>> I'm serious Philippe >>>> >>>> >>>> Le 10 mai 2015 ? 17:47, Robert Adler <rgacpa at gmail.com> a ?crit : >>>> >>>>> Trying out the M 135 f/3.4 ASPH on a Fuji X-T1, as a potential >>>>> longish lens solution. This visual phenom occurred (no photoshop!). >>>>> http://gallery.leica-users.org/v/rgacpa_HI/Bat+Bending+Strength-2015 >>>>> -05-09.jpg.html >>>>> >>>>> Ted Grant has an image, "Martha," that seems to be somewhat similar >>>>> to this >>>>> effect: >>>>> http://tedgrantphoto.com/Martha.htm >>>>> >>>>> I think Ted has never been able to explain why this happened: he >>>>> knows what he was doing when he took the image, but how it happened >> eludes him. >>>>> Perhaps nothing to do with Ted's effect, but interesting... >>>>> >>>>> BTW, this is your Mother's Day photo quiz: knowing the equipment, do >>>>> you know why this happened? >>>>> >>>>> Happy mother's day to all the amazing moms out there!! >>>>> >>>>> -- >>>>> Bob Adler >>>>> www.robertadlerphotography.com >>>>> >>>>> _______________________________________________ >>>>> Leica Users Group. >>>>> See http://leica-users.org/mailman/listinfo/lug for more information >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more information >>>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > >