Re: Digital camera pix

["Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi Chris,

Tesla list wrote:

> Original poster: "Chris Brick" <cbrick-at-rebelbase-dot-com>
>
> >I've noticed that arc pictures show the so-called banjo effect much more
> >pronounced than do film-based pictures I've taken.  Does anyone know if this
> >is simply a result of the better focus and resolution, or does the image
> >sensor not truly integrate continuously over the exposure interval, instead
> >taking discrete samples in time and adding them?
>
> The resolution of a digital camera is far from that of film.  I did a lot
> of testing when working for photoaccess-dot-com on their digital camera
> asic.  My best guess would be the banjo effect has to do with the scan rate
> of the CCD.
>
> Chris

The banjo effect occurs with film as well. The banjo effect comes from time
lapsed photographs where the streamers follow their previous ionized arc paths
and move as the ionized channel is super heated.

Bart