On 26. jan. 2012, at 06.02, Mark Spano wrote:
> 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.
That's assuming you're shooting with something optimized for SD. This thread relates to shooting video with a 5DmkII.
All dSLRs are notoriously bad at downsampling from full sensor to HD video size (aka line skipping), and I strongly doubt that a further downsampling to VGA resolution would be any better quality.
K
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