We used the Expert1 picture mode for our review of the LG LF5600. This mode has good defaults and lets you adjust more options. For gaming, you can use any mode because all modes have about the same input lag.
'Backlight' is a personal preference and depends on the amount of light in your room, so feel free to increase it more than us.
We recommend both noise reduction features when watching anything other than near lossless content, as it helps a little bit with removing the noise. Turn on 'Real Cinema' when watching Blu-rays, to remove judder.
We disabled 'Dynamic Contrast' so as to not crush the shadows. We also set 'Color Temperature' to Warm2 to be closer to a 6500k white balance.
We don't recommend that you copy our 2-pt. grayscale calibration, as this varies by individual unit.
Questions & Answers
Update 08/25/2016: It now seems, after someone pointed this out to us, that under a new firmware update, it is now possible to also play some video files.
Before asking a question, make sure you use the search function of our website. The majority of the answers are already here.