I was wondering if there is any online test pattern or a calibration disc to help in calibrating the gamma setting on a HDTV set. I have read that it is impossible to calibrate gamma by eye, and that it should be left at 0 on a Samsung TV if no equipment is being used.
My Samsung TV gamma ranges from -3 to 3. I do not know which value would make gamma to be closer to 2.2 level, but if I leave it at the default 0 value, the image looks a little too dark (in my opinion).
I have used the Disney's WOW calibration disc on a PS3, as well as AVS 709, and although they give me good contrast, brightness, and color, it seems that they don't provide any test image for gamma calibration without equipment. Which might mean that there could be no test images for gamma calibration (without equipment) at all.
I know I can't set gamma properly by eye, but for my set, +1 seems better than 0, and +2 seems to give the better details on blacks. However, if I set gamma at +2, the image sometimes seems washed out.
I have tested gamma my own way in different manners. For instance, one of them is by watching a HD Youtube video on a smartphone or PC while playing the exact same video on my TV using the PS3's Youtube application. When testing gamma this way, it seems that +2 is closer in color accuracy and image quality to the gamma level used by the smartphone or PC.
I can't get my TV professionally calibrated because this HDTV is old already, and I rather spend the $2xx calibration price later on if I buy a new HDTV