[mdlug] OT - IR jamming

[Kristian Erik Hermansen]

On Feb 16, 2008 6:26 PM, Dave Arbogast <mdlug3 at arb.net> wrote:
> I was just in DC with my top of the line SLR digital camera. I was in
> the right place at the right time to take photos of a motorcade entering
> the big house. I was about 12 feet from them and 16 feet from the inter
> gate as it opened. (I shot for several newspapers in the day, so you
> could say I'm not am amateur.)
>
> OK, shoot, shoot, shoot.  Daylight, immediate response pro camera.
> What's the problem ?  This was a high raking official as the tailing
> S.S. Tahoe had the back 3 windows open and 3 armored soldiers with
> fingers on their machine guns. Yes, they gave me the evil eye for trying
> to take their photo from 4 meters, but my camera refused to take their
> photo.... it took many photos minutes before they arrived and many more
> minutes after the iron gates closed behind them.
>
> The only explanation is IR / RF  jamming of my system. I wish I had gone
> to manual focus as I do often, but I have never held down the shutter
> release with no result.  The guys following up the rear were too cool.
> None of the other motorcades we saw that day had the heavy artillery
> exposed in the trailing SUV ready to fire.

What model camera was this?  Of course, I am sure there are many ways
to accomplish what you believe has happened, but check out this
article...
http://www.digitalcamerainfo.com/content/HP-Developing-Picture-Jamming-Technology-to-Block-Unwanted-Photographs-.htm
-- 
Kristian Erik Hermansen
--
"It has been just so in all my inventions. The first step is an
intuition--and comes with a burst, then difficulties arise. This thing
gives out and then that--'Bugs'--as such little faults and
difficulties are called--show themselves and months of anxious
watching, study and labor are requisite before commercial success--or
failure--is certainly reached" -- Thomas Edison in a letter to
Theodore Puskas on November 18, 1878