>My guess would be something like this for film cameras... >Because the camera gets to 1/1,000 or 1/4,000 of a second exposure by >using a narrower and narrower slit that travels across the face of the >film (1st to 2nd shutter curtain distance), I would pulse the flash. Say >I used 200 (or 2,000) pulses of flash in that 1/4,000 of a second. I >could get about any exposure I wanted and the illumination would end up >being even because I fired the flash when the slit was at the top of the >film and at the bottom and everywhere in between. Kind of a strobe, but >very fast. I wouldn't have to get the mechanical parts to be perfect, >there could be some slop in when the flash started and ended. Just so >long as the flash was pulsing when the slit first opened until it finally >closed.
That sounds a perfectly good explanation to me. I'll buy it. You take Paypal? :-) Cot ____________________________________ Oh, swipe me! He paints with light! http://www.macads.co.uk/snaps/ ____________________________________ Free UK Macintosh Classified Ads at http://www.macads.co.uk/ ____________________________________
