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Forums
4hv.org :: Forums :: Tesla Coils
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Taking pictures of DRSSTC's

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Part Scavenger
Mon Jun 05 2006, 02:35AM Print
Part Scavenger Registered Member #79 Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
How do you guy's take pictures of DRSSTCs? I can't get anything to look better than a "cloud" or just really dark. My arcs look exactly like Steve Ward's on his site, but I can't get them to take. I've had no problem with my SGTC. I wanted to show you guys my new coil, but I can't get any good pics. NOTHING of the banjo effect, and they look about 1/2 as long as they really are.

Ideas?
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Kolas
Mon Jun 05 2006, 02:42AM
Kolas Registered Member #102 Joined: Thu Feb 09 2006, 08:15PM
Location: Raleigh, NC
Posts: 169
digital camera? try speeding up the "shudder" speed, or exposure time
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Steve Ward
Mon Jun 05 2006, 02:45AM
Steve Ward Registered Member #146 Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
I usually use about a .5 to 1 second exposure length at 200 or 400 ISO and the lowest fstop my camera will allow (usually around 2.8 or 3.5). You cant let the exposure go too long, or you will just get a bunch of hazy sparks. Also, try to keep ambient light as minimal as possible.
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HV Enthusiast
Mon Jun 05 2006, 02:54AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
I generally shoot with a shutter speed of about 1 second and ISO of 100-200 at f/2.8. I keep a small amount of illumination in the room. The key is to experiment with various settings until you get something you like.
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Part Scavenger
Mon Jun 05 2006, 02:56AM
Part Scavenger Registered Member #79 Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673
Well, I'll try that. Most of the time I've been using fstop the same, ISO the same (tried them all), but I think my exposures have been too long.

Thanks, I'll try that tomorrow if school doesn't get me!
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Reaching
Mon Jun 05 2006, 09:29AM
Reaching Registered Member #76 Joined: Thu Feb 09 2006, 10:04AM
Location: Hemer, Germany
Posts: 458
you get very interesting spark effects on a picture if you set your camera on a tripod , exposure time up to 15 seconds (of course, the room have to be dark just a dimmed light) and play around with the interrupter , higher and lower the on and off time.

i usually take my pics with 4 seconds exposure and an on time of around 200yS, off time around 5ms, that would give the spark i like cheesey , but you have to play around with settings,lighting,distance,exposure time,shutter speed ,or Av as its known here in germany (usually variable between 2,8 and 7 or more) iso between 50 and 500, for darkish rooms usually between 100 and 200.

if your drsstc picture is too dark you can take a exposure time of around 4 seconds , run your drsstc and switch the light on for a short time (nothing more than a moment, switch on, switch off)with the right cam settings you´ll have a nice background light tongue
with this technique you´ll get pics like this one Link2
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HV Enthusiast
Mon Jun 05 2006, 11:56AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Nice photo Reaching!
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McFluffin
Tue Jun 06 2006, 12:02AM
McFluffin Registered Member #119 Joined: Fri Feb 10 2006, 06:26AM
Location: USA
Posts: 114
On the same note, how do you guys take digital pictures of tesla coils? My SGTC is driving my camera crazy even from like 6 feet away! Do you always use film cameras?
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HV Enthusiast
Tue Jun 06 2006, 12:28AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
We *ARE* talking about digital cameras.

If your camera isn't working right, then you need to move farther away from your coil.
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Desmogod
Tue Jun 06 2006, 01:27AM
Desmogod Registered Member #139 Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358
McFluffin wrote ...

On the same note, how do you guys take digital pictures of tesla coils? My SGTC is driving my camera crazy even from like 6 feet away! Do you always use film cameras?

I think it might be camera dependant, my Canon G5 has no problems whatsoever with my SSTC's.
I'm sure SGTC's (the spark gap to be more precise) will give off other frequencies that might be detrimental to the operation of your camera.
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