Join Date: Nov 2004
Location: Beltsville , MD
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Gray-Scale calibration with the Spyder2Express on a new Haier HL37E LCD TV
I have taken advantage of the excellent work done by those in the AVS Forums, and wish to report my experience with the Spyde2Express colorimeter. Others have expressed concern about the reliability of this instrument, but I believe my unit works very well. I measured the temperature sensitivity sensing Color Temperature of the 60% IRE and find that the reading increases fairly lineraly about 0.1% per degree F., and at a constant temperature of 85 degrees the Color Temperature repeats within +/- 0.2 %. I am setting the measuring time at 300 ms using the option of auto adjustment of the averaging to minimize the variability at low light levels. The total measuring time is less than 4 minutes for the 11 readings from 0 t0 100% IRE
I have measured the Gray-Scale Color Temperature on more than 5 different days, and find the variability to be less than 3% at any of the readings from 20 to 100% IRE levels. I do find that my Color temperatures at 60 and 70 % IRE are about 8% higher then the other levels, and so far I have not found adjustments on the TV to make all of the readings closer to 6500. My question is does this represemt an error in the colorimeter, an error in the AVCHD disc, an error in the software, or a combination.
I think these results are quite good, and I would be interested in reports from others using different colorimeters.