Re: LCD Black Level adjustment slider? [Controls on CRT and TFT]
Re: LCD Black Level adjustment slider? [Controls on CRT and TFT]
- Subject: Re: LCD Black Level adjustment slider? [Controls on CRT and TFT]
- From: Graeme Gill <email@hidden>
- Date: Thu, 04 Jan 2007 09:46:03 +1100
Roger Breton wrote:
Beats me as to how they can adjust (presumably up or down) the black levels
on an LCD. The way I understand LCD technology, assuming CCFL, all lights
emanates from a back light which is modulated by twisted nematics crystals,
which works as shutters.
I think you'll find that the answer is that they don't. You're analysis
of the physics of the display is correct. There is really only one
adjustment possible on an LCD, backlight adjustment. Everything else
(ie. "Contrast", "Offset adjustments" etc.) is all manipulation
of the video signal path, to make it appear that there are
such adjustments. Whether such things are useful or merely misleading,
depends on your point of view.
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden