I have a workaround for the auto dimming problem that I'm sure some people will appreciate.
First, I'd like to clear up that the "micro dimming" feature of this TV has nothing to do with the auto dimming feature; in fact, the micro dimming feature has nothing to do with any kind of dimming at all. Micro dimming is simply the name Samsung chose for a post-process contrast adjustment that can independently alter the contrast in multiple regions of the same scene at once.
The "feature" most people have a problem with is more accurately called auto dimming, or CE dimming if you're looking for the official term, where the backlight automatically dims for dark or mostly black scenes (credits, night time, etc.), and all 2013 Samsung TVs have this feature, "micro dimming" tagged or not. Furthermore, there is no way to officially disable it...
Officially, anyway. I know there are a couple different ways to get around the problem, but those weren't good enough for me for one reason or another. So, here's my way:
1) Exit all apps and/or the Smart Hub, so that you're in a normal input source (doesn't matter which)
2) Hit the "more" button, and select Amazon
3) A black screen with "Loading Amazon Instant Video" will come up (must be connected to the internet or it will not work)
4) Hit the "source" button at any point during or after that message
5) Select any source you want, and voila
Auto dimming will now be disabled, for any non-app source, so long as:
- You don't turn the TV off. Needs to be repeated every time you turn the TV on
- You don't enter any app (Most apps disable auto dimming to begin with, but they turn it back on before exiting)
- You don't enter the smart hub (same as above)
- You don't switch picture modes, including enabling/disabling game mode (do this beforehand)
Note that loading Amazon from the Smart Hub does not work. It has to be from the "more" menu, outside of the smart hub.
Some pluses of this glitch involve being able to set any picture mode you want, being able to use game mode, and having full access to the picture settings (ie not having to pump the brightness up)
Hopefully Samsung doesn't patch this. I believe they want to force auto dimming because it hides uniformity problems. One of those bean counter things, I guess..