Re: coil photography

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Scott,

A lot depends on your digital camera.  If it is just a point and 
shoot, you may be out of luck.  What you really need is to be able to 
set the exposure time, the aperture,  and the ISO setting 
manually.  If you don't have full control on these settings,  you may 
have some difficulty.  Some cameras have auto exposure with both 
aperture and shutter priority. Others have auto exposure with only 
aperture priority.  In lieu of complete manual control, you want 
shutter priority but with some fiddling, you can also make aperture 
priority work.  One point to keep in mind, if you use a low F-stop, 
your depth of field will be shallow and focusing could be a 
problem.  Manual focus on a target ahead of time is almost a 
must.  The camera will have a hard time auto focusing on a spark.

Good luck.

Gerry R.


> Original poster: "Scott Bogard" <teslas-intern@xxxxxxxxxxx>
>
> Greetings all,
>     I am having trouble getting good pictures of my Tesla coil in 
> operation.  It seems the cameras I have available, do not have a 
> very adjustable exposure time (and I don't have any clue how to 
> take a double exposure, without using conventional film, which is 
> useless to me as I don't have a scanner, so I cannot put my 
> pictures on the computer).  I can get "decent" videos, but still 
> shots captured from them generally only show the arcs, and not the 
> coil (which gives no perspective of actual size), plus the DPI is 
> too low for my taste anyway.  Any suggestions would be appreciated 
> (even referrals to the archives would be great, if you could give 
> me a general place to look, they are vast, and I am pressed for 
> time!)  Thanks a heap.
> Scott Bogard.
>
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