Datacolor User to User Support Group.

Hi,

Finally, I installed the Spyder2 software.

So, now all is fine during the calibration process. Except highlights : 
When I look in CS2, LAB mode, the values range 94-99, 0, 0 seems to be
more blue than gray...
I already noticed that during the process, while setup the luminosity
: the 2nd block from the right was a bit blue...
But I hoped the profile would correct this.

Note that I calibrated my father's sreen (the same screen - viewsonic
VP930) 2 days ago and all was fine...

What's wrong ? How can I find it ?

Thanks for any help,
Florent

Hi,

Both screens were calibrated with the same spyder2, and as I said I
used spyder2 software, in totally dark room with the same video card
(DVI output).
As ususal I used 6500K, 2.2.

Florent

> Not enough info. Both screens calibrates with Spyder2?
> Spyder2Express, or Spyder2, or Spyder2PRO? Mac or Windows, and what
> version? What settings (target gamma and whitepoint, visual or
> meaured, white and black luminance values, ambient light wizard on
> or off?) and what ambient light levels for each monitor location?
> Analog or digital card? One monitor or two on the card? If two, what
> position is each in?

> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com

It's not spyder2pro, not spyder2express, it's spyder2. I can't say it
in another way.

Also, I forgot to say I set both screens to default settings before
calibrate them.

in the infos window, I have (my translation can be wrong) :

screen type : LCD

Gamma : 2.2
White point : 6500K

Luminance mode : visual
black luminance : na
white luminance : na

I've just asked my father wich screen settings I used on its system :

luminosity : 80
contrast : 90
RGB : 70 57 94

Mines are :

luminosity : 85
contrast : 95
RGB : 32 22 97

Big big differences in RGB...

So, just to see, I used the same settings as I used on its system...
the spyder2 measure this :
0,336, 0,354, 165,8, 5343K

I am far from 6500...

Is it a problem from my monitor ?

Florent

> Two identical model monitors, same videocard and configuration,
> same settings... whats different between the two. You didn't answer
> all my questions, so I don't know if you are using Spyder2PRO, so I
> don't know if you have the info window available to check white
> luminance on each etc...

> Without that info, my guess is that your monitor is too bright,
> and is nonlinear at the top end. This would require dimming the
> monitor. You could set a target white luminance for this in
> Spyder2PRO, for Spyder2, you would must dim the monitor before
> starting. Most LCDs are too bright for color managed work anyways,
> and dimming them also exends the life, so there are multiple reasons
> to try this.

> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com

In a message dated 2/26/07 12:01:23 PM, florent@... writes:


> 0,336, 0,354, 165,8, 5343K
> 
> I am far from 6500...
> 
> Is it a problem from my monitor ?
> 

Yes, if you are asking for 6500k, and getting 5300k, then thats a big 
stretch, and may indicate that the monitor is our of range. LCDs with few or   no 
controls on them are fine when the internal settings are good, but problematic 
when they are not!

See what calibrating to native whitepoint gives you.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...
www.colorvision.com




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I've not explained things correctly I think, sorry.

I have 5343K when I use my father's RGB settings (wich give him 6500k)
I can obtain 6500k, but I have to use RGB settings like R32 G22 B97,
but, as I said, I have blue highlights instead of neutral...

I hope it's better now :-)

In spyder2 software, I see it : "2.2, native"
But in my sceen settings, I only have srgb, 9300k, 7500k, 6500k,
5400k, 5000k and "user defined". If I reset the screen config, it
automatically set it on 6500k. Is it the native whitepoint value ?

Florent

> 0,336, 0,354, 165,8, 5343K

> I am far from 6500...

> Is it a problem from my monitor ?


> Yes, if you are asking for 6500k, and getting 5300k, then thats a
> big stretch, and may indicate that the monitor is our of range. LCDs
> with few or\ufffd  no controls on them are fine when the internal
> settings are good, but problematic when they are not!

> See what calibrating to native whitepoint gives you.

Me, again.

Incredible...

If I use 97 as blue value. the spyder2 gives me 6520k.
But I see, with the blocks on the left side, that it's too blue.
So I decided to set the blue value to 62, to visually have all gray
patches on the left. I measure again and I have 6502k. A great value
difference, a great visual value, but a little temperature
difference...

Florent

> Yes, if you are asking for 6500k, and getting 5300k, then thats a
> big stretch, and may indicate that the monitor is our of range. LCDs
> with few or\ufffd  no controls on them are fine when the internal
> settings are good, but problematic when they are not!

> See what calibrating to native whitepoint gives you.

> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com

Hi,

In fact, the message you're answering here was sent before the last
one, but appears after on the list... I don't know why..

But it's a fact, the message where I said that all is ok now, with big
difference in blue value (and a big visual difference too), with a
little temp. difference, is the right one :)

So, thank you for your help... wich was one of the best one I've see, as
usual... (it dosen't cost me anything to say that, and it's true ;-))

Florent

> Its the default value, and native will leave it there. One CRTs
> you would have wanted to use User defined, and tune the RGB gain
> settings; on an LCD (particularly one thats not a high end big bucks
> LCD) its certainly easiest, and probably best, to set it to the
> desired whitepoint with the hardware control, then use Native in the
> software. Try that, and get back to us. 

> C. David Tobie
> Product Technology Manager
> ColorVision Business Unit
> Datacolor Inc.
> CDTobie@...
> www.colorvision.com



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