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[photo-3d] Nimslo flash


  • From: ers <ers@xxxxxxxxxxxx>
  • Subject: [photo-3d] Nimslo flash
  • Date: Sat, 20 Jan 2001 19:29:02 -0800

The Burdlo has a jumper with a 47k ohm resistor added, that spans two legs in 
the upper circuit board, and is engaged by a momentary contact switch. The 
resistor had five bands, which threw me because the standard is 4 color bands. 
However, I found a site on the internet with the coding breakdown for the high 
tolerance 5 band type. This is a 1% tolerance resistor, instead of the 
standard Radio Shack 5% tolerance. Not sure if this high level of tolerance is 
critical or not. And re the value, just to be sure, I put a meter on it, and 
it checked out right on 47k. Also the Burdlo is based on a Japanese camera, 
not a UK camera. I looked at a UK parts camera-- the parts are slightly 
different, and funkier, but no reason to believe the same strategy wouldn't 
work. I was initially thinking about using a diode on the main flash lead, and 
a fool the photocell LED, but that's much clumsier technique. There may be 
more modifications further inside the camera, but I'm not interested in doing 
a complete tear down. Also, the Burdlo doesn't appear to stop all the way down 
to Nimslo small aperture-- possibly there were vignetting problems in the wide 
coverage demanded of the Nimslo lens. The overall design of the Nimslo is 
really elegant.