[opendtv] Re: 625 video quality is good enough....

Why are you still talking of MPEG2? All through this thread I've been
pushing the line that legacy doesn't really matter in Europe, we've got a
clean slate.

Even the Viper offsets it's G from R/B, so produces much more than 2048 if
you discount the effective chromatic aberration (which is taken out by
processing, just as in all the other decent cameras). 2048 horizontal
samples will happily get you to about 2700 horizontally, but you're still
stuck with 1080. And I took frames from the captured sequence and printed
them using a dye-sublimation printer at 400dpi, the frames are 17" wide on
paper.

----- Original Message ----- 
From: "Craig Birkmaier" <craig@xxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Wednesday, October 20, 2004 4:19 PM
Subject: [opendtv] Re: 625 video quality is good enough....


> At 3:59 PM +0100 10/20/04, Alan Roberts wrote:
> >Who says the cameras aren't oversampling? The sensors all have "precision
> >offset" G from R/B, so they're effectively oversampling, read the specs.
> >It's only when you get down to the level of the FX1 that oversampling
goes
> >away. And have you seen any pictures from a Viper with a decent lens? I
> >have, and they're sharp to well oiver 30MHz.
>
> The vVper is the only camera I know of that oversamples, and yes, it
> makes very good pictures. But it too has only 2048 samples
> horizontally. This is good for 720P, since it is more than 1.5 times
> the target number of samples per line; not much help for 1920 x 1080.
>
> And none of this addresses the encoding limitations with MPEG-2.
>
> Regards
> Craig
>
> P.S. I can imagine seeing this high frequency information on a scope,
> but what kind of a display are you using that can resolve these
> details?
>
>
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