[argyllcms] Re: Getting back to using argyllcms. Some questions.

On Friday 28 November 2008 18:44:06 Leonard Evens wrote:
> On Sat, 2008-11-29 at 12:16 +1100, Graeme Gill wrote:
> > Leonard Evens wrote:
> > > I understand correctly, that term refers to a table stored in my video
> > > card.  Does the monitor have its own LUT which is used to `calibrate'
> > > the monitor?
> >
> > Generally LCD's have their own lookup tables they process the
> > video data through before sending to the actual panel. It is
> > this mechanism they use to simulate the range of controls
> > that people expect to be on monitors. For color calibration
> > and profiling purposes, these simulations usually degrade
> > the resulting images.
> >
> > Graeme Gill.
>
> I reviewed for myself how LCD monitors work.   Is there anything, such
> as the brightness of the light soure, which one adjusts at the hardware
> level.  Or it it just all done by  the internal LUT.

For consumer grade LCDs the only adjustment that does not use the internal LUT 
is the back light level (brightness).  Everything else (contrast, color 
controls, gamma...) uses the internal LUT.

Hal

Other related posts: