[photo-3d] Twin-synching/Timing etc.

["John Billingham" <narjan@xxxxxxxxxxxx>]

In response to Alan, Brian and others of you dreaming up all those 
swell timing and synching circuits. Please consider the merits of the 
lowly 1725 RPM "washing machine" motor. Readily available in the 
dumpsters of most major cities. If you have this turning a black 
stick 
against a white background ,and point the loaded camera(s) at it, 
when you shoot at 1/125 sec you should see .23 of a revolution as a 
gray "wedge" on the photo, at 1/500 , you should see .115 of a 
revolution etc. Obviously,you can compare the images from the two 
cameras to see which does what. As is often said in this list,"film 
is cheap" Maybe cheaper than some transistors and an oscilliscope.    
This gag is from the old days of camera repair, neccessitated one day 
when a dinosaur stepped on the electronic timer. I hope it is 
amusing. Regards, John Billingham  (aka the second cheapest person in 
NYC)


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