[TCML] top load and photography

[Jeff Larson]

Distance is good for keeping the camera safer, but being close enough so 
that you are safe doesn't mean it is safe for the camera.  I talked to 
some one awhile back that said they lost there digital SLR to the EMI 
effects of a coil at some "safe distance".  It was killed completely.

I have had my Canon 20D lock up 5 times on different occasions filming 
coils where I had to remove the battery to "reboot" it since it got hung up.
Of course I had it lock up under the 345kv lines at work too and in a 
500 mRem/hr radiation environment too.  So maybe my camera is more 
sensitive to these things. 

The digital Sony video camera occasionally gets some effects.  On one 
occasion the camera had a bunch of menus pop up on the recorded video.  
When heavy ground strikes occur, some additional electrical noise (hiss 
and pops) is picked up audio circuits.

I think making sure that the coil is tuned up well and making sparks is 
probably important too to reduce the radiated noise that will affect the 
cameras. 

It can be pretty amazing how electronics respond to intentional abuse.
The Geek Group did a thing where they were hitting a computer running 
windows with streamers from a big coil.  It was doing pretty well.  
Started to reboot a bunch of times and then eventually died.  But I 
think they had to remove some metal in order to really get it to die.

The great pictures that you can get from that camera is worth the risk.
Good luck Neal.

Jeff



Neal Namowicz wrote:
> After I wrote about the photography, I remembered that I have an old 
> Sony digital (around 1+ meg) that I could use. More than enough for 
> the 'net. (I'll still keep my distance :)
>
> Neal.
>
>
> ----- Original Message ----- From: "Lau, Gary" <Gary.Lau at hp.com>
> To: "'Tesla Coil Mailing List'" <tesla at pupman.com>
> Sent: Saturday, March 01, 2008 2:38 PM
> Subject: RE: [TCML] top load and photography
>
>
> With cameras, digital or otherwise, I think that if a distance is safe 
> for you to not be struck, it's also safe for the camera you're holding.
>
> Regards, Gary Lau
> MA, USA
>
>
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