i've always wanted to be able to calibrate my tv's to enjoy a better viewing experience and even shelled out the big bucks for an isf cal on a sammy dlp a few years ago.


i recently acquired a barco le probe that is used to calibrate lcd monitors...it can display x and y values and luminance on my laptop.

i have a 52" sony (model w3000) lcd hdtv and am on directv service(hr20-700 hd-dvr). i tivo'ed the 10 minute grayscale/color patterns broadcast on the hd-net channel.
using these patterns, i was able to display an 11 step graduated gray scale on the screen and measure each of the unique ire gray scale boxes with the barco probe connected to my laptop.

i was able to crudely adjust the rgb gains & biases to get each of the 11 measurements to x=.31 and y=.33 (my display only reads out to 2 values, so i couldn't achieve a full readout of x=.313 and y=.329).


i have no way to measure or plot gamma (although i did have to choose "low" gamma to achieve my adjustments.

i know i have read there was only one way to achieve D65 with values x=.313, y=.329.

can anyone please give me feedback on whether or not this is a somewhat accurate way to calibrate using the gains & biases in my user menu?

if i have achieved the x=.31 and y=.33 values, is it safe to assume i am pretty close to an accurate D65 gray scale calibration?

thanks for any advice & feedback!