To low and you'll lose detail in the dark areas to high and the picture will look washed out with poor contrast.
To tweak the overall brightness/luminance you tweak Contrast and/or Backlight.
I'd like to have as much contrast/dynamic range as possible without compromissing detail or accuracy (I'm striving for accuracy).
The trick is to have Brightness setting as low as possible, without destroying detail in the black areas, and Contrast as high as possible without making the picture look an eyes burner nor destroying detail in the white areas. At the same time that the Color settings match perfectly with the Contrast/Brightness balance, I noticed that a higher Contrast setting increases perceivable color saturation so it's a balancing at.
Interesting that you don't have the HDMI Black level option... on my TV this option is available so I guess it means my setbox is not sending a 0-255 range output.
Initially I liked to have this option set to Low as it did indeed make the overall colors and blacks look deeper, but then I thought that it was doing this destroying detail just like Dynamic Contrast... I guess I should try it again with my current settings.
Which I slightly changed again lol.
I noticed that my last settings provided a slightly poor color saturation and contrast, low dynamic range, to conservative.
So I tweaked the Backlight, the Contrast, and Brightness settings to get something more vivid less dead.
At the same time I Disabled Black Tone as I can do better with the correct Brightness/Contrast balance anyway.
Backlight: 18 (Depends on ambient ilumination but this setting works well in all situations for here)
Color Space: Auto
Black Tone: Disabled
Everything else same as last settings.
I could still tweak Gamma and HDMI Black Level but it already looks great as it is.
Right now there's just a bit to much red in human skin sometimes, probably further tweak in the white balance settings to clear that out.
I'm getting the AVS disk soon.
Dynamic and Natural presets look pathetic to me lol specially after comparing to the tweaked Standard and Movie presets.
Dynamic and Natural probably have Dynamic Contrast and Black Tone settings at extremes.
In Movie mode all colors are less saturated than in standard if you use exactly the same settings.
But it will be very noticeable in human skin that will look a lot more red in Standard than in Movie.
Standard = Movie + 3 to 5 points in Backlight/Contrast + 8 to 12 points in Color
I just wish someone would find a way to unlock the 10 point white balance controls on the UE32F5000, that would be the cherry on top of the cake!
I've read testimonies of people doing this in older models by changing the model number on the Service Menu, but naturally I wouldn't want to be the first to try it on my F5000...