Datacolor User to User Support Group.

I am trying to calibrate a HP LP2475W & Samsung 226CW with a Spyder 3 Pro and I have been having lots of problems.

The Samsung 226CW I can't get anywhere near the HP, the colors are off completely, dark green looks like grey.

The HP, I can get what I think is good color, but when I try to get the luminance down to around 90-120 whites look grey and look like I am looking through a grey net cloth.

I had the brightness down to 10 when doing it without RGB sliders to get about 10 luminance, but when I used rgb sliders i was at brightness 35 or so.  Either way, whites do not look white and everything appears drab.

On Jul 5, 2009, at 11:38 PM, snapshotninja wrote:

> I am trying to calibrate a HP LP2475W & Samsung 226CW with a Spyder  
> 3 Pro and I have been having lots of problems.
>
> The Samsung 226CW I can't get anywhere near the HP, the colors are  
> off completely, dark green looks like grey.
>
> The HP, I can get what I think is good color, but when I try to get  
> the luminance down to around 90-120 whites look grey and look like I  
> am looking through a grey net cloth.
>
> I had the brightness down to 10 when doing it without RGB sliders to  
> get about 10 luminance, but when I used rgb sliders i was at  
> brightness 35 or so.  Either way, whites do not look white and  
> everything appears drab.

Whites on screen cannot, by definition, look gray. Dim them, and they  
make white less bright, but still white. The only ways for them to  
appear "gray" is if the user has other elements on screen that are  
brighter than application white, or ambient conditions that are too  
bright, meaning other things in the field of view that are brighter  
than screen white, or occasionally someone will use this phrase to  
mean having the contrast between whites and near whites incorrect, so  
that, while true whites look white, other light tones look too dark.  
What you describe sounds more like a gamma issue than a whitepoint  
issue. Are you getting appropriate distinction between the various  
levels of gray in the SpyderProof gray ramps in the SpyderProof image  
on the lower right? Are you in a low enough lighting condition to use  
a 90 to 120 candela whitepoint? Are there unshaded windows in your  
field of view, or insufficiently shaded? At 90 candela, the room needs  
to be nearly black, at 120, merely dim. Check your ambient light  
level, and let us know which of the five levels it is defined as.

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...

On Jul 6, 2009, at 11:17 AM, Vampire D wrote:

> White feels to me like I am looking through a grey mesh, I can't  
> think of any other way to describe it, it just doesn't look like  
> white, looks off white.  I typically do my photography work in  
> complete darkness, I do not run lights in my computer room and my  
> main monitor is the brightness thing in view by far.  If I set the  
> brightness anything below say 50 on this monitor, it just looks drab  
> and whites "appear" more towards a grey.

As I've noted, there must be something wonky, or whites would appear  
white at any luminance level...

Possibly a side effect of being a vampire, that is to say: of working  
in the dark. If you drop some high-brightness LCDs down to the  
luminance levels necessary for working in vampire/prepress level  
darkness (as was traditionally done with CRTs) they may well suffer  
side effects that cause contrast and saturation issues. For more  
assistance you would need to contact Datacolor Support from our  
website, and include as much information as possible about your  
display, computer, OS, videocard, what settings you are using  
(assumedly DVI, and hopefully not MagicBright) and what settings you  
are using in our software, plus which of our products and versions you  
are using, and attach an ICC profile that is indicative of the issue.  
And as good a description of the result as possible, what you are  
offering here may not be descriptive enough. Is this happening at the  
OS level? In Photoshop? Do the before and after in SpyderProof look  
different? In what way? Does the gray ramp I asked you to look at show  
even, distinguishable steps?

Another approach, would be to turn the lights on, and calibrate at 150  
candelas, and see if that eases your problem.

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...

On Jul 7, 2009, at 11:55 AM, Vampire D wrote:

> I've tried DataColor support, it is much to time consuming and  
> difficult. I eventually gave up.

What year was this?

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...

On Jul 7, 2009, at 1:11 PM, Vampire D wrote:

> I think early 1960's.

The company has been around that long, but it would have been some  
other type of color management...
>
> Seriously though, this year, I gave up after trying for a month but  
> apparently you don't believe me.
> I'll move along now, thanks.

Send me the ticket number, and I'll look into it.

thanks,
C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...