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Tesla Coil Photos


From:  D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent:  Saturday, February 07, 1998 1:13 PM
To:  Tesla List
Subject:  Re: Tesla Coil Photos

to: Chuck

Have you tried shooting the same identical coi setup with Kodak vs. Agfa to
compare the results?  I have always used Kodak but thought it would be an
interesting experiment to try identical spark scenes with two different
types of film at the same speed.  Our formula is f2.8 wide open for 4 sec.
with ASA 100 film with camera on tripod and used the 2 sec timer to trip
the shutter to avoid any "bumping" of the camera.  This is actually quite
an overexposure but I like the very solid thick streamers produced with
method vs. the thinner streamers is the shutter is under 1 sec in exposure
time.  This is an experiment I should have tried a long time ago but never
did -- just thought perhaps you had done a comparison and noted the color
quality of the prints. If you fire your coil up this winter please let me
know if you have time to do this test.

DR.RESONANCE-at-next-wave-dot-net
 


> From:  Chuck Curran [SMTP:ccurran-at-execpc-dot-com]
> Sent:  Saturday, February 07, 1998 8:26 AM
> To:  Tesla List
> Subject:  Re: Tesla Coil Photos
> 
> Hello Max:
> 
> I asked the same question in the past year or two and got several good
> starting points.  I took that and ended up with using ASA 400 film, F5.6
and
> exposure times ranging from 2-6 seconds.  I was happy with the results
using
> an old Agfa 100% mechanical camera made in 1958.  I mention this last
point
> because when I tried using my new Minolta electronic camera, it went nuts
> when it was within 25 feet of the coil.  This summer I plan on trying to
use
> ASA 100 with a F stop of 2.8 or even wide open.  I would not even try
taking
> any picture without a tripod and one of the cable type attachments for
> shutter actuation.  Have fun with your picture taking and I hope to see
the
> results posted soon
> 
> Chuck
> 
> 

> >From:  RODERICK MAXWELL [SMTP:tank-at-mail.magnolia-dot-net]
> >Sent:  Friday, February 06, 1998 11:44 AM
> >To:  tesla-at-pupman-dot-com
> >Subject:  Tesla Coil Photos
> >
> >I have taken some photos of my capacitor discharge tesla coil and
> >should be able to post them next week when the flatbed color scanner I
> >mail-ordered comes in.
> >  The question that is most on my mind is what speed of film is most
> >suitable for filming coils operating in the dark? I have used ASA 1000,
> >and ASA 400. Some of the pictures came out blurry due to the shutter
> >staying open for a long period, and movement of my hand. I have ordered
> >a tripod to elimimnate hand movement, but I'm still not sure what speed
> >of film would be best.
> >
> >
> >
> >
> >                                 Frankensteins Helper
> >                                         Max
> >
> >
>