Michael Erlewine
Well-known member
What is the highest resolution for a single frame that we could pull out of an HVX200 progressive scan stream? Is it 1920x1080 or 1280x720?
Thanks,
Michael Erlewine
Thanks,
Michael Erlewine
HVX200 Single Frame Resolution?
- Thread starter Michael Erlewine
- Start date
Bart_Boge
Well-known member
I would think that because the DVCPRO-HD format is 1920x1080, you could expect that as your still frame res.
This is not to be confused with the native resolution of the CCDs themselves, which would undoubtedly be less. As discussed ad nauseum on this site, there are some distinct advantages to using less pixels and using pixel-shift technologies to make up the difference resolution-wise.
Basically, bigger pixels give you better sensitivity and less noise. If you are producing a 1/3" CCD camera, fewer/bigger pixels is far more useful than more/smaller pixels, if the right kind of processing is done with the raw image.
In a perfect world, you'd want 1" CCDs at 1920x1080. But Jan won't be able to sell you one for $6k. If she gave you 1/3" CCDs @ 1900x1080 raw, the lenses couldn't resolve to that resolution anyway--and you'd need spotlight arc lamps to light your set.
Barry and/or Jan, correct me if my characterizations are not reasonably accurate.
Anyway, the single frames of a DVCPRO-HD 1080p stream would be 1920x1080. Yes.
This is not to be confused with the native resolution of the CCDs themselves, which would undoubtedly be less. As discussed ad nauseum on this site, there are some distinct advantages to using less pixels and using pixel-shift technologies to make up the difference resolution-wise.
Basically, bigger pixels give you better sensitivity and less noise. If you are producing a 1/3" CCD camera, fewer/bigger pixels is far more useful than more/smaller pixels, if the right kind of processing is done with the raw image.
In a perfect world, you'd want 1" CCDs at 1920x1080. But Jan won't be able to sell you one for $6k. If she gave you 1/3" CCDs @ 1900x1080 raw, the lenses couldn't resolve to that resolution anyway--and you'd need spotlight arc lamps to light your set.
Barry and/or Jan, correct me if my characterizations are not reasonably accurate.
Anyway, the single frames of a DVCPRO-HD 1080p stream would be 1920x1080. Yes.
Bart_Boge said:
Let's be not too emphatic about that. It is a trade-off with with some advantages (the ones you named). So let's say it's the next best thing if you can't have real native CCDs (which on their own have their disadvantages...)
Bart_Boge said:
And better hope the lens resolves the FULL resolution, otherwise even pixelshift can't save your image (that observation was wrong....). The image NEEDS to pass the lens at at least full resolution, bacause everything else happens after the photons passed through...