Originally Posted by DJR662
I'm still keeping an open mind though by testing Wizziwig's findings with my own 75Z9D and see for myself how much of a problem it really is (both test patterns and real world content) with what he is describing. Though I have to say in advance, I have never noticed such problems myself and I have never read anything about it. If it would pose such a problem, I'm sure lots of 75Z9D owners would have made their voice heard on various forums by now. Vincent Teoh has reviewed the huge 100" Z9D model and I don't seem to remember he said anything about it with regards to those kind of issues. The things I DO keep reading about though, both user experiences and pro reviews, are the unwanted side effects of the X-wide filter as is also the case with the 85Z9G unfortunately.
If you're not bothered by typical VA panel viewing angle issues, maybe it's best not to look for them. Once seen, it cannot be unseen and will probably jump out at you watching everything.
If you're still interested, I already gave you a real-world example from Last Jedi - you don't need test patterns. The gamma-shift and constant changes in shadow detail as scenes pan across the screen is pretty much in all content if you pay attention. Detail in shadows will magically appear at the borders and then disappear as it moves towards screen center. On TVs with the worst viewing angles, just moving your head can cause visible changes in shadow detail. If your disc player allows pausing and zooming/panning, try panning around any scene with dark shadow detail (even people wearing dark clothing or hair) and see how the details appear and disappear depending on where they land on the screen.
The root cause is illustrated well in the photos in this old Samsung thread
. As you can see, a normal VA panel has a very narrow cone where it has the highest contrast and highest gamma. This narrow cone will also move around as you change viewing position. Any pixels outside this cone will lose color saturation and reduce gamma due to light contamination as seen in the photos I posted earlier.
You need to pick a TV with issues you can live with. As a uniformity fanatic, any TV that causes images to change appearance depending on where they land on the screen is an automatic deal-breaker for me. Others may be more bothered by worse black levels or blooming. Pick your poison.
Edit: If you do want to play with test patterns, I suggest taking a look at this old shadow detail pattern
I made a long time ago. Pay attention to what it looks like as you move your head, change seating position, or just pan this pattern around the screen.