RE: coil photography

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dave Halliday" <dh@xxxxxxxxxxxxxx>

You can merge two digital photographs using image editing software.

Mount your camera on a tripod or fixed support (essential)
If you do not have a tripod, drill a 1/4" hole through a chunk of plywood,
clamp it to a handy table or workbench and use a 1/4"X20 short bolt to
secure your camera's tripod mounting socket (try it out first to make sure
it fits, some cameras are metric).

Shoot one long exposure of your coil in operation, turn the coil off and the
room lights on and take another photo of your coil in "daylight"

Merge the two especially playing with the ratio between the two images.

You can also Google for "HDR Photography" if you want to get really fancy...

Your camera manufacturer should have a website that explains how to do long
exposures if you no longer have the FM from which to RTFM :-)

Dave

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Wednesday, April 18, 2007 6:29 PM
To: tesla@xxxxxxxxxx
Subject: coil photography

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.

_________________________________________________________________
Exercise your brain! Try Flexicon.
http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglineapr
il07