Digital BW, The Print

John,

Will the new Apple Cinema Displays render both
grayscale and color correctly?

Pablo
--- johnglodge <john.lodge@...> wrote:
> 
> It is always amusing to watch the kind if discussion
> that LCD/CRT 
> causes.
> 
> For a useful appraisal see www.displaymate.com
> 
> Basically on a LCD the greyscale is not as linear as
> it is with a 
> CRT. Not that a CRT is actually linear but it is a
> lot smoother and 
> more easily profiled.
> 
> Recently (well it started a few years ago with Sharp
> and Eizo and a 
> few others) manufacturers started putting 10bit
> DAC's in their 
> LCD's. That is the actual signal going to the LCD
> pixel is an analog 
> signal and in these cases it is being driver by
> 10bit data.
> Mostly this 10bit information is not surfaced to the
> computer driver 
> normally 8 bits (8x3=24) are surfaced. The displays
> are then 
> precalibrated with an internal (to the LCD) lookup
> table that 
> translated 8bit values into 10 bit greyscale
> corrections. Some of 
> the suppliers (Eizo for example) provide calibration
> software that 
> can recalibrate the LCD and reload the LCD resident
> table. (Normal 
> color calibration software cannot do this).
> 
> This is why a small, and only small, selection of
> LCD's will yield 
> greayscale (and color) performance equivalent to a
> CRT, the rest 
> will not.
> 
> Of course in every other way an LCD is better:
> lighter, brighter, 
> less power and so on. But for photography (B&W or
> Color) the 
> greyscale raggedness was and is a critical issue.
> 
> PS: just before posting I checked: and the Eizo
> ColorEdge CG220 with 
> ColorNavigator is 14bits, as before translated back
> to 8bits.
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com,
> "Diane Fields" 
> <picnic@c...> wrote:
> > I've read over and over for the last several
> months on one 'pro' 
> forum that almost all CRTs will stop being made the
> end of 2005.  
> Mine is not quite at the end of its very good life
> but it will 
> probably be time to replace it in 2006.  I've been
> wondering just 
> what I will do since I will have to choose an LCD,
> want a very good 
> quality monitor but probably not the 'best' which is
> what they (pro 
> forum) were recommending (because of price).  I
> calibrate of course--
> -but am wondering from those that have switched from
> CRT to LCD what 
> you are finding as to being able to calibrate to
> your standards (I 
> tend to find this group has 'high' standards for the
> most part).  
> > 
> > Diane
> > -----------
> > Diane B. Fields
> > picnic@c...
> > photo site  http://www.pbase.com/picnic
> >   ----- Original Message ----- 
> >   From: tariqgibranstudio 
> >   To: DigitalBlackandWhiteThePrint@yahoogroups.com
> 
> >   Sent: Friday, March 18, 2005 10:39 AM
> >   Subject: [Digital BW] Re: Correcting exposure
> for Gray Gamma 1.8
> > 
> > 
> > 
> >   Your remark about monitors having their own
> "sweet spot" is the 
> key I
> >   think.  I have been back and forth with this
> issue and various
> >   displays over the years.  Recently, I added a
> fairly high end NEC
> >   2080UX LCD screen(the first LCD screen which was
> actually better 
> than
> >   the CRT Mitsubishi Diamontron and Lacies I had
> previously 
> used!). 
> > 
> > 
> > [Non-text portions of this message have been
> removed]
> 
> 
> 
> 


		
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