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Activity Forums AJA Video Systems Which Kona for me?

  • Bob Zelin

    October 19, 2008 at 2:41 pm

    please remember that the HP Dreamcolor monitor is not a video monitor, and has no HD-SDI inputs – only DVI. So if I were a graphics guy, and wanted to do hi end work for Discreet, AE, Maya, etc., I would certainly be jumping to look at this monitor. But for guys like us that are dealing with HD-SDI workflow (that involve products from Sony, Panasonic, JVC, Blackmagic, AJA, and other video manufacturers), this monitor is not even in the running when comparing it to the usual Panasonic, JVC, Sony, CineTal, TV Logic, eCinema, etc. You would be at the mercy of HD-SDI to DVI converters from AJA and Blackmagic (and Gefen and DoReMi).

    Bob Zelin

  • Paul Provost

    October 20, 2008 at 5:25 am

    trying to remember, but now i think it was actually an invidia card with an sdi daughter card which means of course that you would need a sdi to (10 bit) hdmi (1.3) converter to the hp dreamcolor – which comes with a calibration probe i think – and 601, 709 etc precalibrated presets. interesting. and they just dropped the price $1000 to $2499. just interesting i think.
    and i just got an email from ecinema touting big price drops, at least for their low end screen. hmm.

    “HE’S SUCH A GIRL” HD feature film
    grade and finish @ post + beam
    http://www.postandbeam.tv

  • Ramona Howard

    October 20, 2008 at 3:18 pm

    Yes, 10bit would have to come over SDI or HDMI as DVI is only 8bit, always has been.

    All I can say, is don’t fall into the hype with any of this stuff, do your homework and know exactly what you are getting as it will effect all of our viewing pleasure down the road.

    My .02 cents,
    Ramona

  • Michael Nichols

    October 20, 2008 at 3:49 pm

    I wish I had this info prior to my scan job! The 3K files no longer exist for this project!! That would have been great to scale down as opposed to scale up!

  • Michael Nichols

    October 20, 2008 at 6:14 pm

    Hey Gary,

    Thanks for the advice! I went and picked up a Kona 3 for my set up. Now my question is this: With my scans at 1868 x 780, what is my best course of action moving forward? I have my cut completed in an 1868 x 780 sequence within FCP/Gluetools. I want to grade this in Color and then output through the Kona to an SR Deck. Should I finish everything working within the 1868 x 780 dimensions and then bring into After Effects, Shake or the like and uprez horizontally to fill the 1920 wide canvas with black pad on the top and bottom?

  • Marijn Eken

    October 20, 2008 at 11:31 pm

    Ramona, maybe you should have read those DVI specs yourself as well. If you read carefully you can find that it DOES support 10-bit signals. Always has 🙂

    Although I must admit that it’s also clear from the specs that no official ‘standard’ has been developed as to what a 10-bit DVI signal should look like. So it is possible, as long as the video card and monitor play nicely together.
    I’m saying all of this from the top of my head, but I think there was also some kind of bandwidth limitation when using 10-bit so I’m not sure up to what resolution you could go.

  • Ramona Howard

    October 21, 2008 at 12:32 am

    Marjin,

    Hate to stir it up here, but,….

    Have poured over them, along with many specs. You say it very clearly, you think but are not sure of several aspects, be sure before you jump in as it makes a big difference as to what others take away from this.. We are talking about HD resolutions or higher (why in earth would you want 10bit in anything lower).

    This is all part of the bad information that gets passed around. Hell, we would all like to believe that guy we have known for years, that tells us that something is correct and not have to worry that it isn’t, but the reality is we can’t because of bad info, or rather clever marketing…..you choose. That is why I say, get the spec and read it yourself and what you don’t understand turn to an engineer rather that a sales guy. Oh and good luck with that, not an easy thing to decipher, unless your John Abt 🙂

    I will leave you with a comment that is made by another manufacture that knows DVI very well. You do the internet search on which one 🙂

    I think the answer for now is pretty simple. The Dreamcolor does not accept an SDI input. The NVidia cards do not do anything greater than 8-bit on DVI output.

    Tab A does not fit into Slot B.

    It would be cool for several applications if DVI would output greater than 8-bit. But it doesn’t and probably will not anytime soon. So for right now, HD-SDI is the viable path.

    I stand by my comment, along with many engineers at many facilities. FYI this is why we have not rolled a DVI solution into ours and continue to turn to AJA for a true 10bit (or higher) solution. You work in 10bit (or higher), need to view 10 bit (or higher), then you need to make sure that is what your looking at and nothing less..

    Cheers,
    Ramona

  • Ramona Howard

    October 21, 2008 at 12:44 am

    Will add take a look at wikipedia

    https://en.wikipedia.org/wiki/DVI

    A single DVI link consists of four twisted pairs of wire (red, green, blue, and clock) to transmit 24 bits per pixel.

    That would be 8 bit 🙂

    Cheers,
    Ramona

  • Paul Provost

    October 21, 2008 at 5:22 am

    ok, but wait. the dreamcolor does have hdmi right? and hdmi 1.3 spec can handle 10bit (i think). so the decklink extreme pro extra super (or whatever they call it now – it has hdmi out – 10 bit? i don’t know).
    or you could go nvidia daughter card out sdi or kona 3 sdi to a sdi to hdmi (hopefully 1.3 10 bit) into the dreamcolor?
    i’m just saying this is an interesting monitor (have never even seen one yet).
    fyi i use kona 3 into a sony crt pvm 20L5/1 for hd monitoring, so i got dogs in this race…

    “HE’S SUCH A GIRL” HD feature film
    grade and finish @ post + beam
    https://www.postandbeam.tv

  • Ramona Howard

    October 21, 2008 at 6:29 am

    Paul,

    Yes the HDMI spec does support 10bit.

    Better yet, just go with the SDI to HDMI $400 AJA converter to add to a solution you already own. It would be cool if AJA added this into their Kbox, I would happily pay the extra $. This way one solution gives you assured pass thru, bit for bit for both methods of delivery. I think the Dreamcolor will be a popular monitor and no doubt that many others will go this path also. HDMI makes sense to the monitor (don’t expect all the other high-end gear to change) which is why the Kbox solution would be very good all the way around. For portable on-set jobs, less is more. The less hardware and connections to add in the mix the better 🙂

    Cheers,
    Ramona

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