Originally Posted by PeterLewis
Hey jkozlow,i have been reading alot of your post here and on HDJ in regards to i'am trying to calibrate the wb in THX/day mode and cinema/night on my GT30 like you did on your VT30.
Do you still swear by using Lg apl patterns for this process,or have you gone a different route?
Ps. How many notches in your warm temp in the sm have you happen to move your Red drive? Mine keeps asking for around -12/13...just curious.
Thanks for all your input and studies...
For the GT30/VT30, the first thing I would recommend is setting your brightness, color and tint correctly in the THX and Cinema menus by using a calibration disc and a blue filter. Then calibrate greyscale using the service menu and you can point THX and/or Cinema modes to the calibrated color temp. After numerous calibrations, I still believe that using large APL windows for greyscale yields the best skin tones on the VT30. I originally calibrated all 3 color temps in the service menu (cool, normal, warm) using small APL, large APL and standard windows on the AVSHD calibration disc and then cycled through warm 2 (the equivalent of warm in the SM), normal and cool 2 (the equivalent of cool in the SM) while viewing various content. The calibration with large APL gave me the best skin tones on my VT30 without having to desaturate the "color" control from the value I originally set it at using the blue filter method (which is currently set to a value of "50" btw). All the other calibrations were too red and required me to lower color by as many as 3-6 points to remove redness from skin tones. This is not ideal, as it not only removes redness, but it desaturates ALL colors!
As for my current calibrated value for red drive, it is set at e9 using Calman and large APL windows. Before my A board was replaced to fix the VT30s fluctuating brightness, the red drive was set at f5. You'll have to count to see what the difference is, as it cycles through a few letters as well - not just numbers. Note that I have never changed any of the cuts - they are all at their default value of "80" and I have never felt the need to change them. I still have delta E values of around 4-6 even down around 20 and 30 IRE just by changing the drives if I recall correctly and this is "good enough" for me.
Hope this helps!