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Sager 4750 screen calibration woes

post #1 of 3
Thread Starter 
Hey all,

I'm trying to do some video editing/graphics work on a Sager 4750. All in all, the machine seems great, but there are some issues perhaps those more experienced with these machines might be able to help with.

I do computer animation, and everything from the ground-up. From building models, surfacing, lighting, animating, compositing, corrections and editing. The whole nine yards. The 4750, on paper, seems to be able to handle everything I need it to. In fact, it runs all my apps flawlessly.

However, I'm running into problems trying to match the appearance of the LCD display to a properly-calibrated NTSC monitor that's attached to the 4750's s-video out. Those of you who do this sort of work, know why this is very important. If your work's final destination is the NTSC realm, it pays off to keep an eye on how it looks during every stage of the process.

Now, I know that it's nearly impossible to get a perfect match between an LCD (or even SVGA) display and an NTSC monitor. But I can't even get close with the 4750's LCD, and the controls provided by the ATI drivers. What I see on my 4750's screen bears almost no color resemblance to what it shows on the NTSC monitor. The difference is so drastic, I'd be a fool to rely on the 4750's screen to create anything that would ever be viewed on NTSC monitors.

I've matched SVGA to NTSC in the past simply by adjusting the desktop colors with whatever controls were provided by the drivers so that what I looked at on the computer monitor was close to what was on the external monitor. This worked well. But the ATI Mobility Radeon 9700 doesn't seem to allow independent adjustment of the (LCD) desktop brightness/color/gamma and the external NTSC monitor. Change the desktop, and the NTSC monitor display changes too.

That won't work, and I'll quickly be getting rid of this otherwise excellent notebook if I can't get it to.

Has anyone been able to get the 4750 LCD to approximate an NTSC monitor? If anyone knows any tricks or tips, I'd sure like to hear about them.

Thanks.
post #2 of 3
Now I'm definately not an expert in what you are talking about and don't even know if the solution I suggest is even close to what you're looking for, but I would give PowerStrip a try. You can independently change each of your monitors. I use it at home and at work with dual displays (Laptop LCD and seperate LCD/CRT monitors.) I get much greater control over the controls of each monitor. That's too bad the ATI color options aren't as robust as the Nvidia's. The nvidia drivers have NTSC, etc color calibration options.

Hopefully this helps!

http://www.pcworld.com/downloads/fil...id,6241,00.asp
post #3 of 3
Thread Starter 
Earlier I downloaded the ATI tray tools from guru3d.com, and it let me adjust the displays separately, and even assign hotkeys for different color profiles. I can switch to my NTSC-like color profile and back, with no hassles.

PowerStrip does that, and more, it seems. The upshot of all that is I was able to better (much better) match the LCD to the external NTSC monitor. It's close enough to work with, so I'm satisfied with it now.

Thanks for the tip.

Now If only ATI would provide a way to assign arbitrary gamma curves like the Nvidia cards do, and add a control like Nvidia's 'digital vibrance' we'd be set.
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