AVS Forum Special Member
Join Date: May 2008
Location: San Francisco - East Bay area
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The higher end and larger screen-size Samsung TVs have 10-point grayscale calibration controls that allow you to dial in 10%, 20%, 30%, etc. individually The 10% adjustment step would likely fix the excess blue issue from 5% to 15%. If your model is limited to shadow and highlight grayscale controls, the problem you are having is a nonlinearity issue that COULD be engineered-out of the display, but they just aren't spending the money to do so at lower price points. All you can do is to partially fix the excess blue problem and live with the slight excess in yellow that you'll likely see from 20%-50% or so in order to make the blacks look less blue from 5%-15%. If the excess yellow is too distracting from 20% to 50%, then your only option is to live with the excess blue issue from 5%-15%. Getting the lowest error at each grayscale step is the calibration goal, but when there's a problem like the one you have, you get into the art of calibration where you try to balance errors so that overall errors are small(ish) when you can't completely eliminate a problem due to insufficienct controls. So if you have a 2 error at 20% and 15 error at 10%, you might have to accept an 8 error at 20% in order to get a 9 error at 10%. What you have going for you is that green errors are easiest to see while blue errors are the hardest to see. But since yellow is a mix of green and red, yellow errors are fairly visible also. So the art of compromise to get 20% and 10% looking decent at the same time is where you need to concentrate.
Another option would be to use one of the Lumagen processor's memories for calibrating the smaller TV... of course you'd have to run video for the small TV through the Lumagen processor which may not be practical, though there are some HDMI to Cat6 converters that would make the change possible by running Cat6 cable from the room with the TV to the room with the processor and back to the room with the TV (some of these systems require 2 Cat6 cables so you'd have to do 4 runs to make that solution work. Distance isn't much of an issue with the HDMI-to-Cat6 converters.
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