[Tig] Fwd: Canon 4K monitor

Juan Ignacio Cabrera jicabrera at gmail.com
Sat Jan 25 01:10:20 GMT 2014


Interesting... I had a Dolby engineer setting-up the monitor and he said he
was up to date (I use it every day at Bad Robot) but this was 3-4 months
ago. Maybe we need to call them again?


---
*Juan Ignacio Cabrera*
*Colorist & Stereographer*
*SGO Mistika Specialist*
+1 (818) 370-5849
JIcabrera.com


On Fri, Jan 24, 2014 at 4:23 PM, Robert Frye <bcfrye at earthlink.net> wrote:

> Thanks Juan for your follow up.
>
> What I must say is you found the "small bright object" issue which was
> visible as you described in the initial software release of the monitor.
>  This was indeed an issue and with the help
> of some great early customers in Europe, and a team of engineers that flat
> out refused to accept that this was an inherent limitation of the
> technology, Dolby was able to release a series of software updates that
> virtually eliminated this problem.  I'm betting that if you saw the PRM
> with the latest software, with the most recent "fix" for this artifact
> (there were incremental updates), that you'd find a huge difference in the
> starry sky situation you described.
>
> And the vibrating you described also could be seen in certain conditions,
> with the initial software.  Thankfully, the engineering team also was
> relentless in their effort to fix this in later software releases.  When
> *any* brand new technology like the dimming BLU in the PRM is first
> brought to market, the company will endeavor to find all the issues before
> launch of the product.
>
> But inevitably, once it gets into the field, early adopters will find
> things that no beta test cycle could ever find… that's why as Product
> Manager, I'm always about building and maintaining those critical customer
> relationships… they're the gold in the entire process, and thankfully, at
> Dolby I was able to drive a continuing development process so all those
> issues could continue to be worked and eventually solved.
>
> So Juan, you're absolutely right about what you saw, but thankfully, those
> issues have been mitigated or completely eliminated in the following
> releases.
>
> Bob
>
>
> On Jan 24, 2014, at 2:33 PM, Juan Ignacio Cabrera wrote:
>
> Hey Robert,
>
> For me the issue was evident when you had a small hot spot on the frame,
> it would get dimmer and get the tone of the surrounding colors. I am
> talking about looking at the monitor straight front on the color suite, not
> looking sideways. In a starry sky, the stars would look dim and dull...
>
> Also, an interesting artifact occurred when I was stabilizing a piece of
> old film and some quick 1-2 pixel was happening. The image started
> vibrating in brightness. Looks like the edge of black around the image was
> creating a diffused shadow over the picture that was vibrating at the same
> rate the thing edge was showing on and off.
>
> Don-t get me wrong, I love the idea of having a reference monitor like the
> Dolby where I can work on rec709 or P3 as well as feeding YUV, RGB or XYZ
> color components and knowing that my color in general is pretty accurate,
> but I was not expecting the silly artifacts at all.
>
> Juan.
>
>
> ---
> *Juan Ignacio Cabrera*
> *Colorist & Stereographer*
> *SGO Mistika Specialist*
> +1 (818) 370-5849
> JIcabrera.com
>
>
> On Fri, Jan 24, 2014 at 9:48 AM, Robert Frye <bcfrye at earthlink.net> wrote:
>
>> That's an interesting comment about light and color bleed.  Does this
>> refer to viewing it way off axis?
>> Because when viewed in a "normal" position, that's something that the
>> monitor never has been criticized for.
>> Due to the BLU technology, if you do view it way off axis, then you'll
>> see some ghosting, which may be what
>> you're describing.
>>
>> Sorry that you don't feel comfortable on it, honestly there have been
>> very many major motion pictures graded
>> on the PRM, by some of the worlds most critical colorists, so apparently
>> it is a comfortable experience for some.
>>
>> Having said all this, please note I'm not shilling for the monitor or
>> Dolby, as I was a part of a large round of
>> lay offs due to company restructuring, so while the PRM was my baby, I'm
>> no longer pitching for the team :)
>>
>> Bob
>>
>>
>> On Jan 23, 2014, at 10:22 PM, Juan Ignacio Cabrera wrote:
>>
>> > Sohonet www.sohonet.co.uk sponsors the TIG.
>> > Support from Digital Vision www.digitalvision.tv
>> > Support from MediaCloud www.MediaCloud.cc
>> > =====
>> >
>> >
>> > That sounds great coming from the Dolby PRM manager... I look forward to
>> > check the Canon out. As much as I really wanted to love the PRM-4200, I
>> > don-t entirely feel comfortable grading with it. The light and color
>> bleed
>> > is way too much for a monitor of such high range.
>> >
>> >
>> > ---
>> > *Juan Ignacio Cabrera*
>> > *Colorist & Stereographer*
>> > *SGO Mistika Specialist*
>> > +1 (818) 370-5849
>> > JIcabrera.com
>> >
>> >
>> > On Thu, Jan 23, 2014 at 10:14 PM, Rob Lingelbach <rob at colorist.org>
>> wrote:
>> >
>> >> Sohonet www.sohonet.co.uk sponsors the TIG.
>> >> Support from Digital Vision www.digitalvision.tv
>> >> Support from MediaCloud www.MediaCloud.cc
>> >> =====
>> >>
>> >>
>> >>
>> >> Bob Frye would like me to pass this on the TIG in reply to Carl Skaff’s
>> >> comments/queries on the Canon
>> >> 4k monitor.
>> >>
>> >> —Rob   TIG admin
>> >>
>> >> Begin forwarded message:
>> >>
>> >>> From: Robert Frye <bcfrye at earthlink.net>
>> >>> Subject: Re: [Tig] Canon 4K monitor
>> >>> Date: January 23, 2014 at 9:11:41 PM CST
>> >>> To: Rob Lingelbach <rob at colorist.org>
>> >>>
>> >>> Carl -
>> >>>
>> >>> It's always exciting to work with a new reference display, especially
>> >> one with the pedigree that the Canon has.  As the product manager for
>> >> Dolby's PRM-4200, I have had many opportunities to do some serious in
>> depth
>> >> analysis of many displays, true reference versions and pretenders to
>> the
>> >> throne, so to speak.
>> >>>
>> >>> While I haven't had an in-depth session with the Canon, from what I've
>> >> seen during it's previews at IBC and NAB, I can say that Canon is
>> doing all
>> >> the right things.  Of the several 4K displays entering the market now,
>> it
>> >> strikes me as being the one most likely to become the "it" 4K monitor
>> in
>> >> this size.  I was impressed with it's gray scale rendition. The way it
>> >> comes up out of black without  crushing the lowest code words reminds
>> me of
>> >> the Dolby monitor.  Very accurate and smooth, does a great job of
>> rendering
>> >> the details in the shadows.  That might be one area I'd suggest you
>> look
>> >> into with the content you're working on there.   As good as the
>> E-series
>> >> OLEDs are, when I measured their gray scale tracking, they did crush
>> the
>> >> first few code words coming up out of black, which may or may not
>> impact
>> >> your shadow details, of course this is content dependent.  I've
>> thought the
>> >> Canon had good colorimetry as well, both the primaries and secondaries
>> seem
>> >> well represented to my eyes.
>> >>>
>> >>> I'm looking forward to getting some seat time with the Canon myself…
>> >> will be very interested to hear your thoughts as you continue
>> evaluating /
>> >> working with it.
>> >>>
>> >>> Bob
>> >>
>> >> --
>> >> Rob Lingelbach  http://rob.colorist.org
>> >>
>> >>
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>>
>
>


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