Message
Re: [colorvision_group] Differences in calibrating two monitors
2006-06-03 by CDTobie@aol.com
In a message dated 6/2/06 3:19:11 PM, rlphoto@... writes:
Hello, I have a 6 year old sony 21" crt and a several month old SGI 21"
crt on a sony chasis. I have eyeballed in the white/black points using
the contrast brightness controls with 30 step wedges in PS till I am
happy with the luminance match.
I am also using 1.8 6500. I realize 2.2 is recomended, but I like the
shadow detail of 1.8.
Problem is the old monitor is more yellow than the new one. Just a little.
I have the RGB adjustments to with in .12 in spyder 2 pro on both
monitors. Well under .5 required.
I have large hoods over the monitors.
Is this something I can adjust?
A six year old monitor... wow, I hope its only seen intermittant use! You say you have "eyeballed" the black and whitepoints. I assume you would match black and white luminances using the Spyder and the Spyder2PRO software to match these, by determining which has the higher black, which has the lower white, and targeting these values on both.
You are choosing gamma 1.8, which is indeed yellower, unless you are working in the dark. But other than the color of white, that gets cancelled out by Photoshop, so I can't imagine you actually get more shadow detail by throwing away levels then you do by using a gamma closer to CRT native, and throwing away a lot fewer levels.
If, in the end you can't quite match the two, and wish to hand tweak the difference, you would create a custom curve for the older monitor, and increase the blue curve slightly, to reduce yellow.
C. David Tobie
Product Technology Manager
ColorVision Business Division
DataColor Inc.
CDTobie@colorvision.com
www.colorvision.com