I got my q9fn to match the depth, color saturation and black levels to match my oled at least 90% by using these settings for HDR and sdr movies, cable tv, netflix & amazon streaming, sdr & HDR gaming. You gotta trust me on these settings even though im not a pro. But I sat my q9fn next to my c8 and tried to get it to match the default sdr technicolor expert mode, HDR cinema, HDR & sdr game modes as close as possible. For those that love the oled look, you must try these settings. I am getting almost as good contrast without overly crushing the blacks. I tested shadow detail in a bunch of different scenes and got them really close to oled. Gamma and brightness are the two most important settings that are required to achieve close to oled level depth.
SDR Movie mode
Backlight 5-20 (if you liked oled light close at max, use 20 or go even higher for peak brightness boost
Brightness -1 (you must set it to -1 to get the depth. Higher will wash it out, lower will overly crush blacks)
Contrast 45
Sharpness 0
Color 25
Tint 0
Digital Clean View auto, low, or off (depending if you want cleaner picture with slightly less detail or vice versa )
Auto Motion plus custom (set it wherever you find it comfortable)
Local Dimming High
Contrast Enhancer Off
Color Tone Warm2
Gamma bt.1886 -2 or 0 (if you like 2.4 gamma on the lg oled or -2 on sony set it to -2 on the q9. If you liked 2.2 set it to 0)
Color Space Auto
HDR Movie mode
Backlight 50
Brightness 0
Contrast 45
Sharpness 0
Color 25
Tint 0
Digital Clean View auto, low, or off (depending if you want cleaner picture with slightly less detail or vice versa )
Auto Motion plus custom (set it wherever you find it comfortable)
Local Dimming High
Contrast Enhancer Off
Color Tone Warm2
Gamma st.2084 0
Color Space Auto
SDR Game mode
Backlight 5-20 (if you liked oled light close at max, use 20 or go even higher for peak brightness boost)
Brightness -1 (you must set it to -1 to get the depth. Higher will wash it out, lower will overly crush blacks)
Contrast 50
Sharpness 4
Color 30 (25 if you prefer less saturated)
Tint 0
Local Dimming High
Contrast Enhancer Off
Color Tone Warm2
Gamma bt.1886 0
Color Space Native (auto if you prefer less saturated)
HDR Game mode
Backlight 50
Brightness -3 (you gotta trust me on this one. HDR game mode on this tv is extremely washed out and brightness at -3 combined with the st.2084 +3 setting below matches the nice depth you get in HDR game mode on the lg c8 the closest)
Contrast 50
Sharpness 4
Color 30 (25 if you prefer less saturated)
Tint 0
Local Dimming High
Contrast Enhancer Off
Color Tone Warm2
Gamma st.2084 +3 (to even out the lowering of the brightness)
Color Space Native BT.2020 (You must first go to custom, then change from DCI-P3 to BT.2020 and then go back and put it on Native. If you like less saturated leave it on DCI-P3/auto or even less saturated at BT.2020/auto. If you leave it on default Native it will be on dci-p3 which is super saturated)
These settings are fire. Even with gaming. I get for the most part that oled look and feel with the benefits of the peak brightness for my bright room.