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Forums
4hv.org :: Forums :: Tesla Coils
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Multi-colored TC sparks - colorwheel effects

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Tesladownunder
Sat Sept 01 2007, 08:26PM Print
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
I have run my new colorwheel in front of my camera to shoot multicolored sparks.

Unfortunately lost 30 of my best closeup pics due to a software gremlin, but here are a couple of the earlier ones. They are 1 or 2 second exposures.

Note that these images have been cropped, resized and a mild red color cast corrected partially. They are NOT photoshopped or retouched.

Who wants boring old white sparks anymore?

TDU
1188678376 10 FT0 Teslacolordalekevening00111000

1188678376 10 FT0 Teslacolordalek00291000
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Firnagzen
Sun Sept 02 2007, 03:04AM
Firnagzen Registered Member #567 Joined: Tue Mar 06 2007, 10:55AM
Location: Singapore
Posts: 147
Ohhhhh, so that's how you do it, you spin a wheel with colour filters on it.

Pretty sparks!
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Tesladownunder
Sun Sept 02 2007, 01:18PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
OK those last photos weren't the best.
(Humbly) Please consider these.
I've just changed my wallpaper...
1188739138 10 FT30760 Teslacolorredbilat00811000

1188739139 10 FT30760 Teslacolormultibilat00831000
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Electroholic
Mon Sept 03 2007, 04:55AM
Electroholic Registered Member #191 Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
that is amazing!!!
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Hazmatt_(The Underdog)
Mon Sept 03 2007, 05:43AM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
Heh... someone is going to want to buy your coil now that it produces multicolor sparks.
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Tesladownunder
Mon Sept 03 2007, 12:08PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Yep for sale but very expensive - especially the gold one shades

TDU

1188821300 10 FT30760 Teslacoloryellowredbilat00791000
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HV Enthusiast
Mon Sept 03 2007, 03:35PM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Looks nice.

You can do this even easier using photoshop - no hardware required.

Mount camera on tripod. Take shots as normally.
In photoshop, adjust highlight colors appropriately (or use selective mask) and change arc colors
Then simply combine final images using LIGHTEN blend method.

Add a "brighter" normal shot (no arcs) to the stack for your background and "normal" coloring.
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Tesladownunder
Mon Sept 03 2007, 03:50PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
I get regularly accused of using Photoshop so I increasingly against using it (and I don't have it anyway).

Tell me, what would be hard to photoshop correctly in regard to sparks and not just coloured ones. Perhaps multiple mirrors, or a mirror ball or a mirror sphere.
I want to know what would make you think it could not have been photoshopped.

I seem to recall one of your previous multilayered shots lacking saturation since sparks should saturate the exposure, not be diluted several times.

TDU
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Steve Conner
Mon Sept 03 2007, 03:55PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
If I remember right, EVR used that multilayer technique *because* he didn't like the saturation (blocked-up highlights) you get from a plain long exposure.

TDU, are you trying to emulate the Tesla weapon from Red Alert? or maybe the proton beams from Ghostbusters wink
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Tesladownunder
Mon Sept 03 2007, 04:17PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Loss of saturation just doesn't look right though. 5000K or whatever is saturated, visually or photographically provided the spark is wider than a pixel.

Next time I get it up and running I will put my wide angle lens in the Dalek cage to take what I see with sparks very close up.

And the fictional TC. Sorry I have to kill you now. mad

If you look at the Red Alert TC it has mostly white sparks with one yellow one thrown in. Still lots to do to make that a worthwhile shot including another new effect.
Of course, it could just be photoshopped....

TDU
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