|
|||||||||
|
Thread Tools | Search this Thread |
September 30th, 2007, 02:43 PM | #61 | |
Regular Crew
Join Date: Jan 2007
Location: Zurich (Switzerland); Luxembourg (L)
Posts: 44
|
Quote:
__________________
Canon XH A1 -> Blackmagic Design Intensity Pro Manfrotto 701RC2 on 755BK |
|
September 30th, 2007, 04:08 PM | #63 |
Trustee
Join Date: Sep 2005
Location: Gilbert, AZ
Posts: 1,896
|
Hmmm.
I have not seen anything on it's bit depth. It would be nice to know where this info is located? The only info I read is from there web site about playback: " Play out through the HDMI video output using 8 and 10 bit uncompressed AVI and QuickTime™ files, HDV, Motion JPEG and DV files, as well as 32 bit TARGA and BMP image sequences, which can all be played back on the same Premiere Pro timeline without rendering." Even this info does not tell us if it's playing back all 10 bits from the 10 bit video file..... Update: Looking closer at the Intensity Pro manual online, I found this info on page 20: http://www.blackmagic-design.com/dow...yProMan-en.pdf "When using Disk Speed Test, you need to account for disk seeking, so it’s best to add a healthy margin to the results. If a disk array tests at 32 frames per second HD 1080, it doesn’t mean you can do 29.97 HD capture and playback, as the margin is too tight. When checking the results, look at the 8 bit YUV 4:2:2 video sections, as Intensity Pro uses the 8 bit uncompressed video format." Bad news, it looks like the Intensity Pro only support 8 bit. I wonder if this partially explains the color shift? Glenn? |
September 30th, 2007, 04:26 PM | #64 | |
Major Player
Join Date: Jan 2007
Location: Portland, OR
Posts: 949
|
The output is 8-bit, there is no question about that: the 1X bus can't handle 10-bit 4:2:2. There has been a little speculation about 10-bit sampling to 8-bit out, but no one has clarified that for sure.
Quote:
|
|
September 30th, 2007, 04:56 PM | #65 |
Inner Circle
Join Date: Jun 2003
Location: Toronto, Canada
Posts: 4,750
|
The color shift looks like improper handling of 601 versus 709 luma coefficients, and some issue with analog calibration (the calibration of the analog signal coming off the camera and into the card).
|
September 30th, 2007, 06:10 PM | #66 | |
Quote:
I'm afraid I'll take issue with this statement. While the benefits may be realizable if one is chroma keying, otherwise I challenge you to see the difference. |
||
September 30th, 2007, 06:22 PM | #67 | |
Major Player
Join Date: Jan 2007
Location: Portland, OR
Posts: 949
|
Quote:
|
|
October 1st, 2007, 03:04 AM | #68 |
Major Player
Join Date: Nov 2006
Location: Victoria BC
Posts: 400
|
Daniel, I'm working on a production that I shot in ProRes 422 HQ at full raster 1080P.. and yes, it's beating all the HDV b-roll I shot. It's sharper, and cleaner when being played back and being viewed on a still frame on my computer LCDs.
HOWEVER. I'd bet it'd be hard for me to even tell my own footage apart being played on even a high-end LCD TV. It was worth capturing to RAID at 4:2:2 though, especially since making a claim like this will mean I'll have eventually prove it, right? ;) Btw, I captured the digital HDMI signal at 1080P 4:2:2, rather than an analog component signal (which I'd say had less resolution than HDV). When talking about analog YUV vs. digital HDV.. tough call. The jury's out on that one - I tested analog and decided it wasn't for me and when full digital.
__________________
Mac + Canon HV20 |
| ||||||
|
Thread Tools | Search this Thread |
|