Standard Monitor for HDV color?
by Phorland
on
Sep 24, 2007 at 12:59:42 am
I'm going to use a Dell, which is 1920x 1080 to assist focus. I have a Sony Trinitron PVM-14M4U, a SD monitor. Can I use it to monitor color? DV and HDV have same color, right?
If the Sony Trinitron PVM-14M4U is fine to monitor color out of the Canon A1 shooting HDV, can I connect it to the cam with a BNC cable or do I need component?
Thanks
Phil
Re: Standard Monitor for HDV color? by Phorland on Sep 24, 2007 at 10:17:05 am
How do I calibrate the Dell? I know how to calibrate a SD field production monitor, but the DEll? how? Are the Apple Cinema Display more calibratable?
Thanks
Phil
Re: Standard Monitor for HDV color? by Ed Dooley on Sep 25, 2007 at 12:41:14 pm
The Dell and Apple can be calibrated using something like the Matrox MXO, but at $1,000 it may be a bit pricey for you for only that purpose. You can eyeball it, and even use a blue gel to get a blue only effect which helps calibrate more like a pro monitor. BTW, DV's color space, in NTSC is 4:1:1 (PAL is 4:2:0), HDV is 4:2:0.
Ed
Re: Standard Monitor for HDV color? by Tim Kolb on Sep 25, 2007 at 2:58:17 pm
[Ed Dooley]"BTW, DV's color space, in NTSC is 4:1:1 (PAL is 4:2:0), HDV is 4:2:0."
When talking about monitor color accuracy, technically "colorspace" refers to the defined palette available for any given imaging system. NTSC and the very first JVC HDV (single CCD) camcorders were Rec 601, all remaining HD is under a new standard, Rec 709.
4:2:2, 4:1:1, etc are color subsampling specifications, and they refer to how many pixels carry their color difference assignment (Cb or Cr) into the saved file. In 4:2:2, every pixel has a Y' sample, and every other pixel has both a Cb and Cr sample. The pixels that are saved without Cb and Cr samples have them created upon decode based on the neighboring samples.
4:1:1 for NTSC DV denotes that horizontally, only every 4th pixel holds it's Cb and Cr sample, leaving each group of three pixels in between to be recreated upon playback. This is why DV is so freakin' difficult to chroma key.
4:2:0 specifies that every pixel has a Y' sample, but for a group of four pixels in a 2x2 block (as opposed to NTSC DV's 4x1 horizontal block), again there is only one set of Cb and Cr samples.
On the monitor issue...tough call. The Dells can be extremely hard to color calibrate in the field and any LCD is fairly view angle restricted. They can show you all the pixels for focus, but I'd not depend on it for color. Even with the 601 vs 709 colorspace difference, I'd think that your CRT, properly set up, would be better for judging color. Obviously we'd all like an HD CRT in the field or a really high end LCD...but for many purposes, they're simply cost prohibitive.
