Re: Streamer Color

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "J. Aaron Holmes" <jaholmes@xxxxxxxxxxxxxxxxxx>

Heheh...well, I have a coil, but no camera (the
Digital Rebel belongs to a friend, not me!).  Anyway,
when he's next over, we'll play with the settings a
bit more.  It'll be a while before I can justify
buying such a camera myself! :-))

Regards,
Aaron, N7OE

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: Jeff Larson <jeff@xxxxxxxxxxxxx>
>
> Aaron,
> Could you do an experiment for me?  Take some photos
> of your TC using
> your rebel camera.
> Take a set of photos with the different white
> balance settings.  In
> the past I have always used the auto setting.
> As you can see I am getting varying results with the
> color.
> I don't have a coil set up so I can't try this for
> awhile.  :-(
>
> Jeff
>
> Tesla list wrote:
>
> >Original poster: "J. Aaron Holmes"
> <jaholmes@xxxxxxxxxxxxxxxxxx>
> >
> >I don't see any brown...but yes, it's a digital
> >camera, a Canon EOS Digital Rebel shooting a
> >five-second exposure.  A shorter exposure exhibits
> >much less of this "color change":
> >
> >http://silicon-arcana.com/TC1/IMG_3286.JPG
> >
> >Really, none of this looks quite like it does to a
> >human eye, especially the streamers into air.
> They're
> >nearly invisible in the photos, but quite visible
> in
> >person!
> >
> >Take care,
> >Aaron, N7OE
> >
> >
> >--- Tesla list <tesla@xxxxxxxxxx> wrote:
> >
> > > Original poster: Jeff Larson
> <jeff@xxxxxxxxxxxxx>
> > >
> > > Hi,
> > > I assume you using a digital camera? I have seen
> > > this affect before
> > > with my digital camera.  The camera in total
> > > darkness does not detect
> > > enough light to set the
> > > white balance properly or the light is not what
> the
> > > camera interprets.
> > > The sparks come out looking brownish.  You have
> > > brownish and blueish
> > > sparks above.  I am not sure why you have both.
> > > Maybe the blue
> > > sparks are hotter power arcs which are actually
> > > supposed to be white
> > > or brighter blue?
> > > I saw a major difference in spark color in
> > > particular sequence of
> > > shots from the Ed Wingate's teslathon. If you
> look
> > > at the following
> > > pictures from Terry Blake's site you will notice
> the
> > > color change in
> > > the coil discharge. In the first photo IMG4707
> you
> > > will see a nice
> > > purple spark and in photo IMG 4712 a brownish
> spark.
> > > Also the first photo the TC is being illuminated
> by
> > > another camera's
> > > auto focus illuminator (the red light).   It
> seems
> > > that this helped
> > > the setting of the white balance on the canon
> 20D.
> > > This clue is what
> > > I needed to discovered this problem with the
> white
> > > balance.
> > >
>
>http://www.tb3.com/tesla/ratcb2005/pages/IMG_4707.html
> > >
>
>http://www.tb3.com/tesla/ratcb2005/pages/IMG_4712.html
> > >
> > > I have played around with some raw photos from
> my
> > > canon 20D that
> > > exhibited this brownish spark characteristic and
> I
> > > discovered that I
> > > could shift the white balance and correct this
> color
> > > problem. I
> > > suggest that you try setting your white balance
> > > manually when
> > > shooting coil photos.  This is what I am going
> to do
> > > from now on.
> > > I am not exactly sure of what the white balance
> > > should be other than
> > > about 4000k to 5000k for the color setting.  Or
> if
> > > your camera
> > > doesn't do that, try the florescent light
> setting. I
> > > plan on doing
> > > some more experimenting to see what works best.
> > >
> > > Sorry for running off on a tangent.
> > >
> > > Jeff Larson
> > >
> > > Tesla list wrote:
> > >
> > > >Original poster: stork
> <stork@xxxxxxxxxxxxxxxxxxx>
> > > >
> > > >Can anyone explain the difference in color of
> the
> > > upper and lower streamers in
> > > >
> > >
> >http://silicon-arcana.com/TC1/1_BeforeAndDuring.jpg
> > > >
> > > >Stork
> > > >
> > > >
> > >
> > >
> > >
> > >
> >
>
>
>
>