The banding is caused by uneven calibration in most of the cases!
Originally Posted by totalkonfuzion
The DSE is a bit annoying now that I know it's there. I was watching Transformers 2 today and in some of those desert scenes I saw some pretty bad DSE and vertical banding (I'm assuming that's what I saw as it seems like the brightness uniformity is off). It seems like it's really just about all over the screen at different levels of intensity. These are cheap panels, but at $1300 that I paid I could easily toss in a few hundred more and get something I'm happier with as well.
The best way to avoid banding (tinted or brightness banding like in sandstorms or skies or in mist, dust, smoke etc.):
1. Calibrate the gammalevels as flat as you possible can (in my case 2.38))
2. Look for hickups in the IRE5 to IRE10-range. Sometimes it can make a BIG difference, if you have -1 for green or 0 for green at IRE5
3. Don't go to high with the gamma at IRE5 - the LG simply can't handle this and would swallow much detail near black, if you go to dark. So, more than gamma 2.0 at IRE5 is not reasonable possible
4. Make sure you have the smallest DeltaEs possible at all 20 IRE-points! Just start with IRE100 (after you picked up the best combination for IRE5 and Brightness!), then 50, then 90, 80, 70, 60 50 again, remeasure 100, then 90, 80, 70, 60, 50, 40, 30, 20, 10. After that 95, 85, 75, 65, 55, 45, 35, 25, 15. Remeasure 100. Remeasure 50. Then 90, 80, 70, 60, 50, 40, 30, 20, 10. Remeasure 95. Remeasure 100. Then 85, 75, 65, 55, 45, 35, 25, 15.
After you've done recheck in a qucik runthrough 5, 10, 15, 20 etc. all the way up to 100 to make sure, that both your gamma and your R, G, Bs didn't shift!
5. Now comes the finetuning! Since you have only 1:1 control ofer 20 points in 5percent-slices, you must check all the other shades of grey:
a) Run your Blade Runner BD and jump to the Deckard/Rachael-scene, where she says "He wouldn't see me!". Deckard smashes the door and you hit "Pause" (or "Still" for the matter).
b) Look at the highlight at Deckards door. Is it smooth? Are there bandings? Play around with Red +1 and -1 from your actual position. Redo it with green. Keep the combination, which have the smallest amount of banding at Deckards door (some is baked into the transfer!).
c) Get your "The Mist"-BD and start the Black and White
-version. Jump to a couple of scenes, where the mist/fog is in motion and some of the scenes with flashlights in it.
See a green band for example in the scene at minute 10 or so, where the guy trys to get in is car, before the mist could reach him? Search for the point in the 20point-ISF-calibration, whis is in control of this shade of "grey".
Try to use green -1. Does it work? Otherwise try Red +1 or Blue +3 for example.
Is the green gone, but it seems, that this shade of grey seperates itself too extreme from the neighbourshades? Then try Red +1 or the neighbourshade(s) -1.
d) Do this in so much scenes unless you are sure, that you have removed as much as bandings as possible - it needs a couple of hours! Attention for IRE13! It's possible, that it would appear very
green in the drugstore. The only way, that you can tame it, is with Blue at the IRE10-point, so you have to give in there and need to find a compromise between the two.
e) Check with the 256greypattern of the AVS709-Disc. Does it appear smooth? Is there a green tinted shade near the middle of they greyscale? In this case, go for IRE45 and reduce green by one notch: perfect.
f) Start the DVE HD Basics Blu-ray Disc. Jump to the grey curtain scene and hit "pause". Is there a slightly too hefty brightness jump in the downhalf right next the greytinted curtain? If this is the case, go for IRE50 and give red one notch PLUS (i.e. instead of "10 14 0" you go for "11 14 0").
By now you should have reached your target and be able to watch your wonderful movies free of any banding.