Re: [Avid-L2] AMA Canon 5D Footage Fps and raster size?

A downconvert is a loss of resolution. If you pull a center cut from 16x9,
it's either 960x720 or 1440x1080. Downconverting from 720, you lose 240
lines of resolution- downconverting from 1080, you lose 600 lines of
resolution. An accurately sampled 480 lines with no downconvert will almost
always look better (the noticeable part being perceived sharpness) than a
center-cut extracted and downconverted HD signal.

It's in the same vein as my discontent at DPs who shoot 4K for an HD spot.
So much loss of resolution just looks worse than if they shot it at native
res to begin with.

Bear in mind, I am *not* talking about dual delivery, future-proofing, OR
shooting large area to have the flexibility for non-enlarging repos. Those
are, to me, the only reasons to shoot at higher res than intended delivery.
If I knew I was delivering SD (and only SD), it would be my preference to
shoot SD. Even the best downconverts (Teranex, Alchemist, etc.) suck
compared to no downconvert.

On Wed, Jan 25, 2012 at 11:52 PM, Tom McDonnell <ltr54@sbcglobal.net> 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]

------------------------------------

Search the official Complete Avid-L archives at: http://archives.bengrosser.com/avid/
Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Avid-L2/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/Avid-L2/join
(Yahoo! ID required)

<*> To change settings via email:
Avid-L2-digest@yahoogroups.com
Avid-L2-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
Avid-L2-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/