Similarly 1080 is really 1125 with 45 lines in the vertical interval.
--- In Avid-L2@yahoogroups.com, Mark Spano <cutandcover@...> wrote:
>
> Yes - John's right there. Remember 525i? There are 525 lines of resolution,
> but the active picture raster only occupies 486 of those lines.
>
>
>
> On Thu, Jan 26, 2012 at 12:38 AM, johnrobmoore <bigfish@...> wrote:
>
> > **
> >
> >
> > Not true. The 720x486 is the active picture area and does not include
> > vertical and horizontal blanking.
> >
> >
> > --- In Avid-L2@yahoogroups.com, "Tom McDonnell" <ltr54@> wrote:
> > >
> > > >But possibly the fear of down conversion softness is
> > > why they shot SD for an SD spot.
> > >
> > > So shoot 16x9 to future proof, protect for 4x3 and extract a 4x3
> > center-cut.
> > > Still better looking than shooting 640x480. After shooting so much HD,
> > > framing 4x3 feels so claustrophobic. Now shooting 6x6 with a Hasselblad
> > is a
> > > totally different matter...
> > >
> > > The reason NTSC on a computer is 640x480 is because computers use square
> > > pixels. The smaller raster is really the true imaging area for NTSC once
> > you
> > > take away the electronic blanking and sync pulses that use up part of the
> > > 720x486 raster.
> > >
> > > Tom McDonnell
> > > Cinematographer/Editor
> > > Weisscam Hi-Speed Tech
> > > Los Angeles, CA
> > > New Orleans, LA
> > > 818-675-1501
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
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