AJA HD10A Analog Component HD to HD-SDI
FYI:
Any HD camera head can output HD-SDI SMPTE 292/296 (4:2:2 10 bit) 1.485Gbps USING EXTERNAL SYNC if required for around $1500. I cant understand why Canon have included it as standard - its just pushing the base price up into a cost conscious market. from B&H site: The HD10A is an Analog to Digital HDTV signal converter; it accepts a 3-wire Component HDTV analog video signal (and sync) and converts to HD-SDI digital HDTV signal. Input Component Analog HDTV, 1080i @ 50/59.94/60 Hz, 1035i @ 50/59.94/60 Hz, 1080psf @ 23.98/24/25/29.97/30 Hz, 720p @ 59.94/60 Hz, on three BNC connectors Sync, on a BNC connector Output SDI-HD Digital Video x3, SMPTE 292 and SMPTE 296, on BNC connectors Conversion Analog Component HDTV Video to HD-SDI Digital Video Control External Dip Switch Sync Mode Input Mode Output Mode |
<<Any HD camera head can output HD-SDI SMPTE 292/296 (4:2:2 10 bit) 1.485Gbps USING EXTERNAL SYNC if required for around $1500. I cant understand why Canon have included it as standard - its just pushing the base price up into a cost conscious market.>>
Then stick to DV or HDV. What Canon has done is provide a *professional standard* with all the benefits therein, which until now, was available only on cameras that cost $60,000.00!!! Good move Canon!!! (Standing ovation!) |
John,
The only problem with that method is that the signal is analog and can have noise and other issues. While it will look good it would never be as good as with SDI. It is the same reason why high end SD users would choose SDI over component because it looks better. Before we all thought HD uncompressed component was great because we never in a million years thought we even had a chance of getting HD SDI. |
... have you tried it? - can you say fo'sure?
all CCD are analogue - who's to say Canons A/D is any noisier than using the AJA? is Canon's a professional standard? - I see no SMPTE 292/296 in the specs? valid questions - no concrete answers to date. |
Quote:
Quote:
|
Quote:
http://www.dvinfo.net/canonxlh1/xlh1skinny.php It's mentioned in the very first paragraph. -gb- |
Quote:
Where does it say 10 bit 4:2:2 ?, the 1.485Gbps data rate sort of implies it but it is not specifically stated? Quote:
http://consumer.usa.canon.com/ir/con...&modelid=12152 but I see the SMPTE cable drivers are mentioned elsewhere |
The article referenced at
http://www.dvinfo.net/conf/showthread.php?t=51305 specifically states that Canon is using 8bit signal if this is correct and can be independently verified it looks as though there is a lot of fat in that H1 SDI output. |
I noticed that too John.
I wasn't sure if that was a known fact, or just a guess by that reviewer. I'm hoping it's not true... that would be a pretty big let down on an otherwise really cool feature. |
A big let down?
Do you know what bit depth of HDV is? (It ain't 10 bit.) From my understanding, DV, DVCPro50 and DVCPro100 are all 8 bit codecs. The BBC found no one could tell the difference between 8 bit DVCPro 50 and 10 bit Digital Betacam @ 90mbps. Where it really matters is in compositing, animation and smooth gradations. Many cameras do initially capture at 12 bit and use those bits in processing before they record 8 bit to tape. Yet, if you want to get 10 bit out of a Varicam, you use HD-SDI out to a $100,000.00 D5 deck that can record 10 bit (or a computer). Yes, Canon's XL1 was/is 8 bit the whole way through and its images suffer accordingly when compared to the current champ the DVX100a. I do hope that Canon has stepped up to 12 bit processing, but IMO what really matters is the final output. So instead of it being a big let down, let's wait and see. |
All times are GMT -6. The time now is 09:10 AM. |
DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network