lowering RGB levels on an LCD before calibration
lowering RGB levels on an LCD before calibration
- Subject: lowering RGB levels on an LCD before calibration
- From: Paul Vaughan <email@hidden>
- Date: Mon, 16 Nov 2009 00:45:53 +1100
Hi,
This is my first post to this list. I am an amateur photographer trying to set up my monitor to enable me to get the best colour reproduction from camera to print that I can.
I have a question about whether changing the RGB settings on an LCD will reduce the No. of colours.
After searching the web, I am confused as some posts say reducing RGB values is the only way to reduce an LCD's brightness to an acceptable level, while others say it will cause nothing but problems and reduce the number of colours the display can show. I am hoping the experts here can provide an answer.
I have just purchased a Dell 2209WA IPS monitor (after discovering to my disappointment that my iMac screen was TN), and have calibrated it with a Spyder 3 Pro. With RGB all set at 100% (factory defaults) I could not get the brightness below 250cd/sqm, so I brought the R, G and B levels down to 70% and re-calibrated. This allowed me to get a gamma of 2.2, temp. of 6412 (aiming for 6500) and 138 cd/sqm. I am considering lowering the settings further and recalibrating to lower brightness even further.
The monitor passes the Lagon tests with ease. I can see all the black and white test patterns from 1 to 254, so I am wondering if this means my monitor is fine, or if the NO. of colours issue is real.
I have been unable to find any information on exactly what the RGB sliders do, except that they provide an LUT for the graphics card (which I'm afraid doesn't mean much to me), so if anyone can point me to some reasonably non-technical information on the actual function of these controls, I would be very obliged.
Thank you in advance
Paul
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