[argyllcms] Re: Graphics card

  • From: adam k <aak1946@xxxxxxxxx>
  • To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
  • Date: Sun, 27 Feb 2011 09:53:20 -0500

Nikolaj,
Spasiba za otwiet.

Sent from iPhone

On Feb 27, 2011, at 4:20 AM, Nikolay Pokhilchenko <nikolay_po@xxxxxxx> wrote:

> [off]
> As far as I know, ATI cards are performing the dithering when go from the 
> high bit depth to lower. For example, ATI do the spacial and temporary 
> dithering from 10-bit linearization curves to 8bit DVI/HDMI. The Nvidia 
> usually not.
> So, often it's impossible to use the display calibration on Nvidia because 
> there is 8 bit interface (DVI/HDMI) between the 2D LUT and the interface. The 
> banding is occurs.
> Users had to change the graphic adapters from Nvidia to ATI because ATI's 
> dithering eliminates banding.
> If adapter and display have DisplayPort interface both, There is no problem 
> with Nvidia (I suppose) because of 10-bit depth of DisplayPort interface. In 
> this case the dithering is done in the display by it's own processor.
> [/off]
>
>
> Sat, 26 Feb 2011 17:20:22 -0500 письмо от adam k <aak1946@xxxxxxxxx>:
>
>> Are ATI graphic cards as good as Nvidia?
>> Thanks!
>>
>> Sent from iPhone
>
>

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