T3D Re: Verascope flash sync (TECH-3D digest 537)

[bobh@xxxxxxxxxxxxxxxxxx]

Lme Kbee made a nice flash connection and now finds it fires flash 
before shutters open. This is the design as  it has only Class M 
flash for chemical flashbulbs. They need to be ignited about 15ms 
before shutter opens so they will be at near full brightness when 
they do. Later cameras (not Verascope) had X-sync which closes 
circuit when shutter is fully open. Electronic flash (X-sync) is so 
fast that it can fire full output before the shutters can close even at 
highest speed. This is why between the lens shutters with x-sync 
can use all speed. NO DELAY CIRCUIT WILL BE OF USE. They 
were designed to use flash bulbs with X-sync. Inside the camera 
one could devise a contact to be closed as first guillotine shutter is 
open to go to the flash gun connection. BobH
Bob Howard (bobh@xxxxxxxxxxxxxxxxxx)
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