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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

DreamColor LP2480zx and Scratch

Obviously that's what you'd do if you are feeding the monitor from your PC. I was speaking to the trouble Andrew(Hyperfocal) reported with a blu-ray player, or for those thinking of feeding HD-sdi to the HDMI port via a converter box of some sort.

The blu-ray player is probably sending YCbCr, and a HD-sdi signal that is YCbCr and just media converted (rather than colour-format converted) will not be accurate on the Dreamcolour. - as an example, the Blackmagic mini-converter that converts HD-sdi to HDMI is 10-bit, BUT it just media-converts - so you have HD-sdi YCbCr in -> HDMI YCbCr out. So the monitor won't scale that to 709 or DCI or whatever since it isn't RGB.

I imagine that the monitor's internal DSP can't do the heavy-lifting of both colourspace and colourformat conversion, and that's why we have this limitation. Of course, HP could always surprise with a new firmware release, but I wouldn't hold my breath.

Cheers,
Ben Gervais
Digital Imaging Engineer / Freelance, Toronto
c 416-951-1980
h 416-789-9778
bengervais@gmail.com
 
Dual-link DVI, DCI-P3, calibration for macs

Dual-link DVI, DCI-P3, calibration for macs

I bought one of these recently.... it looks great and is literally perfect for CC'ing broadcast stuff... BUT... does anybody know how to get the calibration software to work with a mac (only ships with a pc version), or do you have to hand calibrate everything through the menu on the monitor if you're not on a pc? Also, there seems to be a lot of back and forth about what port to use... I've got an ATI card and I'm running this currently through dual-link DVI, which according to this link:

http://www.datapro.net/techinfo/dvi_info.html

means I should be getting full 10 bit color, right? Or am I missing something? Not only that, but running it through DVI also means that you can use all the color space profiles that ship with it, as opposed to HDMI where these options are not available for whatever reason... it would seem that Dual-link DVI out to this monitor should solve every problem, right? Please tell me if I am overlooking something. It also means you can do all your redcine renders through this monitor, which has been awesome and a huge help in processing. This is the only affordable monitor I've seen that allows you to use Redcine and actually know what the hell you're getting on a first light.

Finally... has anyone tested the out of the box profiles that come with this monitor? The Rec-709 seems strangely off and I can't figure out why... I'm also extremely curious about how accurate the DCI-P3 profile is? It would make my life hugely easier if it was close enough to be usable. If it isn't accurate, and someone knows how to make it accurate, I'd be eternally grateful if you'd post how. I know these are a lot of questions... but this monitor has a lot of potential, and I want to make sure I'm taking advantage of all of it. Thanks.
 
read the thread

read the thread

HIGL:

read ALL of this thread for explanations, but this monitor does not support 10-bit via DVI (HP Specs), and I can virtually guarantee that you video card isn't sending 10-bit anyways (no OS's currently support 10-bit display in GUI mode - you have to have an application that supports putting the card into a full-screen 10-bit mode that has no interaction with the OS - and I know of no applications that yet do this. See earlier posts in the thread for the reason that 10-bit display probably doesn't matter for you.

This monitor does support 10-bit via HDMI with colourspace emulation, but for RGB info only.

It is not currently possible to 'hand-calibrate' this monitor (whatever that means) HP has stated that mac software is coming, but until then, you'll have to hook your monitor to a PC, load the calibration software / attach the probe, and calibrate, then move the monitor back to your mac. Even with the price drop - it's still an expensive monitor - so buy the $300 calibration kit - don't be cheap - if you want accurate colours there is no shortcut method or 'hand-calibration' method that will work as well or as quickly.

Calibration will make your 709 profile accurate - but out of the box it should be close.

This monitor will never be accurate for DCI-P3, since it's primaries (red and green anyway) are not as saturated as DCI primaries. This means that the monitor will scale DCI-P3 space to fit it's gamut, and may produce a nice picture, but it can never match DCI-P3 except with one of the current projectors. But, as noted with the sony BVM-L series, it will be 'close'.

Cheers,
--
Ben Gervais
Digital Imaging Engineer / Freelance, Toronto
c 416-951-1980
h 416-789-9778
bengervais@gmail.com
 
sory guys

so have discovered if the Blackmagic HD Link Pro does provide 10 over the HDMI?

PS:But the HP does accept 10 over the HDMI?Or just over display port?

Thanks

G
 
Re: DCI-P3 primaries, i read this:
Significantly, it can handle 97 percent of the DCI-P3 specification, which means you could use this monitor to edit video destined for a digital cinema theater. I spoke with one of the animators at DreamWorks Animation, who said that 97 percent was sufficient for their work (if necessary, you could run the video on a DCI-P3 compliant projector to check that last three percent).
Click to expand...
taken from:
Studiodaily
Any comments concerning this?

I'm considering making a go of the MOTU V4HD with this monitor...what do you all think?
 
OK, after a lot of digging I found the Mac drivers for this monitor, to be used with the HP probe (the eyeOne display2 does NOT work).

http://www.xrite.com/product_overview.aspx?ID=1144&Action=Support&SoftwareID=833

It is frustrating that this was nowhere to be found on either HP or X-rite's sites; you can't actually find it! And don't even bother with HP technical support -- they told me this product didn't exist. I think I googled some search terms like "help me find this *&% app already" and on page 1000 I found the link.

I'm using the DreamColor with an HDLink box, which is being fed the single channel HD-SDI out of a Kona LHe. You calibrate with direct DVI connection to the computer (make sure the probe is connected to the USB on the monitor), and it holds that calibration when you unplug the Mac and plug in an HDLink. I did find the white point point a little red (anybody else?), so pulled back on the red gain a little of the 1D LUT in the HDLink.

Andrew Huebscher
Los Angeles, CA
www.andrewdp.com
 
Has one one tried the AJA or black magic SDI/HDSDI to HDMI convertor in to the Dreamcolor monitor or think this is a viable solution for critical monitoring. Presently I have AJA Kona which does not have HDMI native.

thanks,

Dave
UK
 
daveb said:
Has one one tried the AJA or black magic SDI/HDSDI to HDMI convertor in to the Dreamcolor monitor or think this is a viable solution for critical monitoring. Presently I have AJA Kona which does not have HDMI native.

thanks,

Dave
UK
Click to expand...

I'm using the HDLink but going to DVI. _I think_ the HDMI sends a 4:2:2 signal because the LUT options on the DreamColor were disabled, so DVI is really the way to go.

I priced out a Davio to get 4:4:4 dual link HDSDI to HDMI 4:4:4, and it starts around $4K + software. At that point, you might be better off with a different monitor.

Andrew Huebscher
Los Angeles, CA
 
daveb said:
Has one one tried the AJA or black magic SDI/HDSDI to HDMI convertor in to the Dreamcolor monitor or think this is a viable solution for critical monitoring. Presently I have AJA Kona which does not have HDMI native.

thanks,

Dave
UK
Click to expand...

[/I]

I fumbled around with trying to get Boot Camp working on my Mac Pro, and learned the hard way that it would not work with my graphics card (ATI X1900), and I'm stuck with that card to make Apple Color run well.

Andrew
 
Hyperfocal:

Is the Dreamcolor calibration automatic like the Eizo?
I mean you connect the monitor using usb cable , you choose the seetings (like gamma white pont cd/m2 ) and after that it's all automatic?

Thanks

G
 
Gabriele Turchi said:
Hyperfocal:

Is the Dreamcolor calibration automatic like the Eizo?
I mean you connect the monitor using usb cable , you choose the seetings (like gamma white pont cd/m2 ) and after that it's all automatic?

Thanks

G
Click to expand...

Sort of. With the HP, it stores the calibration information on the monitor, and it will hold it even if you are using something like an HDLink box (vs. a computer). I think the Eizo may have something to this effect, though there was not a REC-709 setting so I couldn't say for certain.

Andrew
 
The Eizo hold the calibration too...But actually in the settings or in the profile process there is never mention of the Gamut...So i guess is full gamut all time?Or the gamut is in relationship of brightness cd/mq ?

The profile procedure is automatic?I mean you choose the settings and than it automatically change brightness etc...?

Thanks

G
 
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