cakefoo said:
10 points is a significant difference.
I wasn't suggesting there was a 10 point difference between the VT20/25 and the ST/GT30's, just that you're likely to see something within that range reported for all 3 models depending on who's evaluating. It doesn't really matter one way or the other, cause whether you're talking about CT starting to appear at 10% or 22% stimuli (the ~difference those 10 points represent) the bottom half of the range is not the issue-it's the upper half that's the problem.
One of the reasons for the #1 and #4 values is to see if the TV is lit well enough. Anyway, reading other people's results has meant far more to me than what some guy saw when watching How to Train Your Dragon. It's for people who can't test the TVs in stores themselves. If you're in the market for a 3DTV, you better run a crosstalk pattern instead of watching their demos. That's the main thing to understand.
I agree that it's worthless trying to make qualifications based on watching some CG movie--as you quoted me from earlier. I thought it obvious when I was talking about quantifiable values and % stimuli, I was actually referring to patterns like this. The problem with the 1 and 4 results is that it doesn't adequately weed out people trying to do this kind of evaluation in sub-optimal conditions, certainly not enough to try and argue about a 10 point range on an 80 point scale. The reason for this is pretty simple, the primary eye gradations are going to be much brighter than the off eye crosstalk. So while a bit of light pollution may take the primary eye results to 3 in the light Vs. 1 in the dark, the CT may be an exponential improvement (say 30 in the light Vs. 5 in the dark).
So now reviewers' opinions matter?
Earlier you said:
When the same (flawed) source material is used across the various makes/models, it becomes a comparison. So while they can't fairly declare "X is CT free" after watching How the Train your Dragon, they can say "X is the same as Y", "X is better than Y", etc...
I highly doubt it has anything to do with gamma adjustments. Blackest black is not going to be affected by gamma adjustments.
Blackest black has no bearing on CT. Gamma is going to change the values between black and white. For example, if a 10% stimuli pattern is 2fL with a gamma of 2.22, then it's going to be 3.6fL at 1.8 (made up values for illustrative purposes). It should be clear how this is going to effect visible CT in a patter like this. Each gray number you're seeing is just a certain % stimuli. A higher gamma is going to make each number dimmer (white and black remain the same), thus making the CT more difficult to see. Similarly a low gamma is going to make each value artificially bright, thus making any CT easier to see.
Many people on AVS would be reporting this if it were true. People using universal glasses would be getting the same results with every model television they used them on.
They actually have. If you look through that thread, a lot of Samsung owners have actually seen tremendous gains in switching glasses.