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Mystery Photos from TDU

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Tesladownunder

Tue Mar 31 2009, 07:43PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

This is the sliding spark gap that I take on long exposure to give the previous photo.

Now, what about the next one. It looks to me like I caught a lightning bolt. How is it done?

rp181

Tue Mar 31 2009, 11:06PM

Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529

Is it some kind of film, and someone shone a light on it, with a long exposure? What leads me to believe this is that the light is in front of you at the bottom, and then goes behind. I can't explain your arm though....

hotcrazyfruit

Tue Mar 31 2009, 11:22PM

banned on 5/26/2009
Registered Member #1877 Joined: Mon Dec 22 2008, 02:03AM
Location:
Posts: 147

[/quote1238541710]
its a nuke isnt it? lol

Hon1nbo

Tue Mar 31 2009, 11:29PM

Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042

appears that there is some kind of fog at the bottom... did you use some kind of smoking source and channel that through a plastic guide, like a thin film (as per the suggestion of rp181)?
obviously, the exposure was relatively long, OR it was a double exposure, as after zooming in on the leg there appears to be a small ghost, indicated that either A) this is a merging, but I doubt that as that would ruin the fun, or B) you switched the light source on and off and back on, or said light source is Pulsing...
then again, after closer review, your ENTIRE body is ghosted, bending over which leads me to believe that you physically held the light source and moved it, but since it is a long exposure, you can make your other arm not show up until you stop it where you want it, and put enough light on it (in this case, a shadow)...
so my final thought is that you had some kind of smoking light source, possible magnesium but I don't know for sure, that from bending over, you rose up keeping your left hand out of the way until you were upright, then placing your hand into position (which would explain why you had noticable lesser exposure below your hand than above, as to keep ghosting of the hand minimized, then the little smoke that comes off of magnesium was illuminated after stopping it near the top of the image

again, this is just what I can deduce at first glance...

Tesladownunder

Wed Apr 01 2009, 12:19AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Not magnesium and not a Nuke.

rp181 wrote ...

Is it some kind of film, and someone shone a light on it, with a long exposure? What leads me to believe this is that the light is in front of you at the bottom, and then goes behind. I can't explain your arm though....

No, it's not some kind of film. I always have trouble explaining my arms too.....

Answer is a LED torch with a fibreoptic spray used to light paint an area in a long exposure. I could have done it without me moving if someone else was doing the painting. You can get some really surreal effects with the diffuse light source. I put my arm and leg in front to make it clear that it is not simply an effect added on.

1238544986 10 FT10696 Ledfibreopticstill

1238544986 10 FT10696 Ledfibreopticsurreal

rp181

Wed Apr 01 2009, 12:42AM

Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529

You should try putting the camera perpendicular to the light, and spiral it while walking, to give a 3D sideways cone effect.

How did you reach so high in the above picture?

Tesladownunder

Wed Apr 01 2009, 03:15AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

rp181 wrote ...

You should try putting the camera perpendicular to the light, and spiral it while walking, to give a 3D sideways cone effect.

How did you reach so high in the above picture?

There are lots of possibilities with painting with light. Mostly just child like fun. I did try a cone by suspending it from a basketball hoop and pulling it up but there were some problems and I was in a hurry to get back to work so I did the other stuff.

And reaching so high? I can't explain my arm as you know....

Tesladownunder

Fri Apr 03 2009, 12:12AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Now this is tricky. Any guesses. ( I have altered the exposure and contrast to an extreme amount)

rp181

Fri Apr 03 2009, 01:54AM

Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529

I will go ahead and take the obvious guess:
Blue LED's behind a keypad.
That picture looks like it could be done in paint.

From the last picture, It seems really high, compared to the basketball hoop.

...

Fri Apr 03 2009, 02:57AM

Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445

Looks to me like a bootprint on a piece of plexiglass

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