Samsung Q6FN/Q6/Q6F QLED 2018 TV Review

Tested using Methodology v1.5
Updated Jun 05, 2018 at 09:51 am
Samsung Q6FN/Q6/Q6F QLED 2018 Picture
Mixed Usage
Value for price beaten by
: no price info
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
This TV was replaced by the Samsung Q60/Q60R QLED
Type LED
Resolution 4k

The Samsung Q6F QLED is a 4k TV with great performance for a wide range of different usages. It has very good picture quality due to the high native contrast ratio so blacks appear deep in a dark room, but the local dimming doesn't work well to improve dark scene performance further. It can get bright to overcome glare in a bright room, and also has good reflection handling. Gamers will be pleased by the excellent low input lag and support for variable refresh rates, and the TV can also interpolate low frame rate content with low input lag for a smooth gaming experience. Unfortunately, the image loses accuracy when viewed at an angle.

Note that this is a different TV to the 2017 QLED Q6F. The 2018 Q6FN is also called Q6F or Q6.

Our Verdict

7.7 Mixed Usage

Very good TV for mixed usage. The Samsung Q6F has good picture quality and looks good in most room types. It has some great features for use as a PC monitor and for gaming. Dark room performance is good and it has good HDR capabilities.

  • Blacks are deep and uniform
  • Low input lag for gamers
  • Supports FreeSync for Variable Refresh Rates
  • Image degrades when viewed at an angle
7.5 Movies

Good TV for watching movies in a dark room. It has good picture quality, and the native contrast ratio is high, so blacks appear black in a dark room. Unfortunately, the bad local dimming feature isn't very effective at dimming areas of the screen and letterbox bars aren't completely black.

7.6 TV Shows

Decent TV for watching TV in a bright room. It has decent reflection handling and gets bright enough to overcome glare in a bright room, but it has a poor viewing angle and the picture degrades when viewed at an angle.

7.5 Sports

Good TV for watching sports. The Samsung Q6 is able to overcome most glare in a bright room but has limited reflection handling due to the lack of an anti-reflective coating. Fast-paced movement appears fluid with little motion blur thanks to the high response time, but there is some dirty screen effect and the center of the screen is a bit brighter than the rest.

8.2 Video Games

Excellent TV for video games. It has extremely low input lag for 4k and for 1080p content as long as Game mode is on. It supports a variable refresh rate when used with compatible hardware. Motion is fluid with very little trail thanks to the fast response time.

7.5 HDR Movies

Good TV for HDR movies. The contrast is excellent, so blacks appear black, and it is bright enough for small highlights to pop in HDR. The local dimming feature is bad and can't effectively dim dark areas of the screen. It supports a wide color gamut and there is only slight gradation in scenery.

8.1 HDR Gaming

Great TV for HDR gaming. The input lag is extremely low and it supports a variable refresh rate. Dark room performance is great thanks to the high native contrast ratio but the local dimming feature is bad and can't be disabled.

7.7 PC Monitor

Great TV for use as a PC Monitor. The response time is fast and the input lag is extremely low, so the screen feels responsive. Chroma 4:4:4 is properly supported with most resolutions, and it supports a variable refresh rate, great for PC gaming.

  • 7.7 Mixed Usage
  • 7.5 Movies
  • 7.6 TV Shows
  • 7.5 Sports
  • 8.2 Video Games
  • 7.5 HDR Movies
  • 8.1 HDR Gaming
  • 7.7 PC Monitor
  1. Update 5/21/2020: Converted to Test Bench 1.5.
  2. Update 2/21/2020: Converted to Test Bench 1.4.
  3. Update 2/28/2019: Converted to Test Bench 1.3.
  4. Update 11/16/2018: We have received confirmation that the 55" model with version FB02 has a VA-type panel. You can see a photo of the pixels here.
  5. Update 11/15/2018: We have received a report that a variant of the 55" Q6FN (Version FB02) has an IPS panel, and performs differently to Version FA01 we tested. You can see more information here.
  6. Update 6/5/2018: The 49" Q6FN has a 60 Hz panel, and some results will be slightly different


Test Results

Curved No

The design of the Samsung Q6FN is very good. Some of its features like the stand, the back, and the cable management system resemble the higher-end Q8FN. Just like the Q8FN, the Q6FN does not come with the external One Connect box, so you do not have to plan for it if you decide to wall mount it. The TV is thin with nice borders and operates at a reasonably cool temperature. The build quality is okay but lacks those finishings that premium models have. 


The stand of the Samsung Q6F is metallic, supports the TV well and look very much like the Q8FN only slightly bulkier.

Footprint of the 55" TV stand: 38.3" x 9.8"

Wall Mount VESA 200x200

The back of the Samsung Q6F 55 is plastic, and nearly identical to the Q8FN and the NU8000.

It has nice cable management planning. There are some grooves for guiding all of the cables either through the legs or through the bottom of the TV when wall-mounted.

Borders 0.35" (0.9 cm)

The borders are metallic with a silver finish. They are slightly thinner than the Q8FN.

Max Thickness 2.48" (6.3 cm)

The Samsung Q6 is a thin TV. Although it is slightly thicker than the Q8FN, it will still not protrude when wall mounted.

Build Quality

The build quality of the Q6 is okay. It does not have any gaps and feels solid. It lacks the premium feeling that the Q8FN has.

Picture Quality
Picture Quality
Native Contrast
6203 : 1
Contrast with local dimming
6700 : 1

The contrast of the Samsung Q6F 55 is excellent. Just like most Samsung TVs, the contrast level is high. Even with local dimming disabled the contrast is excellent and blacks appear black in a dark room.

Note: This TV does not allow the switching off of Local Dimming from the regular menu. To take our measurements of native contrast and black uniformity we had to deactivate it through the service menu.

Picture Quality
Local Dimming
Local Dimming

Local Dimming performance is poor, and it is very conservative. It doesn't dim areas of the screen very much, likely to reduce the amount of visible blooming. If you find that it bothers you, you can set it to low as it cannot be turned off completely from the regular menu.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
502 cd/m²
SDR Peak 2% Window
693 cd/m²
SDR Peak 10% Window
860 cd/m²
SDR Peak 25% Window
601 cd/m²
SDR Peak 50% Window
551 cd/m²
SDR Peak 100% Window
559 cd/m²
SDR Sustained 2% Window
690 cd/m²
SDR Sustained 10% Window
548 cd/m²
SDR Sustained 25% Window
600 cd/m²
SDR Sustained 50% Window
547 cd/m²
SDR Sustained 100% Window
558 cd/m²

Superb peak brightness with SDR content. Bright highlights that stand out, and real scenes bright enough for most rooms. This is in-line with other 2018 Samsung QLEDs we have tested so far.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
524 cd/m²
HDR Peak 2% Window
742 cd/m²
HDR Peak 10% Window
802 cd/m²
HDR Peak 25% Window
584 cd/m²
HDR Peak 50% Window
552 cd/m²
HDR Peak 100% Window
549 cd/m²
HDR Sustained 2% Window
734 cd/m²
HDR Sustained 10% Window
514 cd/m²
HDR Sustained 25% Window
581 cd/m²
HDR Sustained 50% Window
550 cd/m²
HDR Sustained 100% Window
546 cd/m²

The HDR peak brightness performance of the Q6FN is very good. Just like the rest of the 2018 Samsung QLEDs, it will display small highlights very well, and the screen remains uniformly bright throughout all the test window sizes.

Picture Quality
Gray Uniformity
50% Std. Dev.
3.029 %
50% DSE
0.189 %
5% Std. Dev.
0.865 %
5% DSE
0.085 %

Gray uniformity is decent. At 50% gray, some clouding is visible and the center of the screen is slightly brighter. Dirty screen effect is noticeable when watching sports or playing video games. However, results improve significantly at darker shades of gray and the uniformity is much better, and almost no clouding or DSE can be seen.

Picture Quality
Viewing Angle
Color Washout
21 °
Color Shift
20 °
Brightness Loss
30 °
Black Level Raise
14 °
Gamma Shift
22 °

The Samsung Q6F has a poor viewing angle, typical for a VA panel. When looking at an angle one notices blacks turning gray and colors shifting, even at small angles. These results are in line with results from other QLEDs. This TV is not a good option if the intended usage involves wide room seating.

Picture Quality
Black Uniformity
Native Std. Dev.
0.685 %
Std. Dev. w/ L.D.
0.733 %

Black uniformity is outstanding on the Q6F, surpassing the already good performance of the Q8FN. There is almost no clouding even close to the test cross.

With LD activated the results are slightly worse as we can see some clouding around the test cross area, but in general, they are still very good.

Note: This TV does not allow the switching off of Local Dimming from the regular menu. To take our measurements of native contrast and black uniformity we had to deactivate it through the service menu .

Picture Quality
Screen Finish
Total Reflections
5.8 %
Indirect Reflections
0.6 %
Calculated Direct Reflections
5.3 %

The overall reflection handling is good. The Semi-gloss screen of the Q6FN manages to diffuse well most indirect reflections. It fails, however, to perform as well in the total reflections, therefore you should expect some glare in bright rooms.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6244 K
Picture Mode
Color Temp Setting
Warm 2
Gamma Setting
BT.1886 +2, Brightness +2

The pre-calibration out of the box settings are pretty good for the Q6. Best results are with the picture mode set to Movie.

At low input levels, the image appears slightly dark as white is missing luminosity. Colors, however, are quite accurate, and just a little warmer due to the 6318K color temperature. The gamma is off at 2.45.

Here are the white balance and gamma pictures measured with 100% windows. These perform better, as the local dimming cannot be disabled and affects the calibration results of smaller window sizes.

Update 04/12/2019: This TV was incorrectly measured with Brightness +2, instead of at 0. This only has a small impact on the results (slightly dimmer dark scenes below about 30 IRE) and so we don't plan to retest it.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6514 K
White Balance Calibration
20 point
Color Calibration
Auto-Calibration Function

The post-calibration image is excellent. The color temperature is very close to our target, and gamma follows our target almost exactly.

Calibration is done with a 100% window instead of our standard 18% window, as the local dimming causes inconsistent readings of smaller windows.

You can see our recommended settings here.

Picture Quality
480p Input

Lower resolution 480p content like DVDs is upscaled well, with no obvious artifacts or quality issues.

Picture Quality
720p Input

Upscaling of 720p content such as cable TV or older game consoles looks good.

Picture Quality
1080p Input

Upscaling of 1080p content such as Blu-rays or game consoles looks good. The image is sharp and there are no obvious issues.

Picture Quality
4k Input

The Samsung Q6 displays native 4k content without any issues.

Picture Quality
8k Input
Picture Quality
Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
90.27 %
DCI P3 uv
94.86 %
Rec 2020 xy
68.28 %
Rec 2020 uv
77.48 %

The Q6F has a wide color gamut as it covers more than 90% of the DCI P3 color space and just above 67% of the Rec.2020 color space.

It is not as wide as the Q7FN or the Q8FN and it also suffers when it comes to the representation of cyan, green and yellow.

It tracks the EOTF line well almost up to about 700 nits or 65% of the input signal, after which some compression is taking place. This will not be bothersome to most people.

The PC and Game mode EOTFs do not follow our input stimulus as well. This effectively makes shadows in dark scenes look slightly darker, but it shouldn't be an issue for most people.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
86.9 %
10,000 cd/m² DCI P3 Coverage ITP
45.3 %
Normalized Rec 2020 Coverage ITP
68.3 %
10,000 cd/m² Rec 2020 Coverage ITP
35.7 %

The Samsung Q6FN has good color volume. It can produce bright colors but fails to do the same with deep, dark ones. The color volume is good, but not up to par with the 2018 Q7FN and Q8FN models, but more comparable to the NU8000.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.130 dE
Green (Std. Dev.)
0.132 dE
Blue (Std. Dev.)
0.102 dE
Gray (Std. Dev.)
0.119 dE

The Samsung Q6F 2018 has very good gradient performance. There is some slight banding everywhere, especially in gray and green, but hardly noticeable.

Even if you do notice a case of major banding that bothers you, you can set Digital Clean View to Auto to reduce it, but this could result in a loss of some fine details.

Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.00 %
IR after 2 min recovery
0.00 %
IR after 4 min recovery
0.00 %
IR after 6 min recovery
0.00 %
IR after 8 min recovery
0.00 %
IR after 10 min recovery
0.00 %

There was no temporary image retention on the 2018 Q6.

This is typical of TVs with VA panels.

Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk

We don't expect VA panels to experience burn-in, as the VA panel in our long-term test appears immune.

Response Time
80% Response Time
5.1 ms
100% Response Time
12.9 ms

Excellent response time with almost no overshoot. The response time is slightly slower than the Q7FN, but still excellent. There is a very slight motion trail behind fast-moving objects, but most of the blur (as seen in the photo above) is due to persistence.

PWM Dimming Frequency
240 Hz

The Samsung Q6F uses PWM to dim the backlight, and there is visible flicker at all backlight levels. The flicker frequency is quite high at 240 Hz, but the flicker is still noticeable to some, especially at low backlight levels where the backlight is off for longer periods of time.

Like the other 2018 Samsung QLEDs, the backlight flicker varies quite a bit depending on the motion settings used, as shown here.

Black Frame Insertion (BFI)
Optional BFI
Min Flicker for 60 fps
60 Hz
60 Hz for 60 fps
120 Hz for 120 fps
Min Flicker for 60 fps in Game Mode
60 Hz

The Samsung Q6 can reduce the backlight flicker as low as 60 fps, even in Game Mode. This results in some duplications, as seen in the photo above, but there will be less motion blur.

To enable the black frame insertion feature on the Samsung Q6FN, set Auto Motion Plus to Custom, and set LED Clear Motion to On.

Like the other 2018 Samsung QLEDs, the backlight flicker varies quite a bit depending on the motion settings used, as shown here.

Motion Interpolation
Motion Interpolation (30 fps)
Motion Interpolation (60 fps)

The Samsung Q6 can interpolate lower frame rate content up to 120 fps. Performance is similar to the other 2018 Samsung QLEDs. There are some visible artifacts in scenes with fast motion, and in some scenes when the motion gets too intense the Q6FN stops interpolating.

Interpolation is activated by setting 'Auto Motion Plus' to 'Custom'. The 'Judder Reduction' can be adjusted for low frame rate content, and the 'Blur Reduction' slider can be adjusted to help clear up motion on 60 fps content.

Like the other 2018 Samsung QLEDs, the backlight flicker varies quite a bit depending on the motion settings used, as shown here.

Update 06/05/2018: The 49" model has a 60 Hz panel, as such it can only interpolate as high as 60 fps.

Frame Hold Time @ 24 fps
28.8 ms
Frame Hold Time @ 60 fps
3.8 ms

Low frame rate content like 24p Blu-rays stutters a bit, this is mostly noticeable in wide spanning landscape scenes. If stutter bothers you, it can be reduced by enabling motion interpolation or the optional black frame insertion feature.

24p Judder
Judder-Free 24p
Judder-Free 24p via 60p
Judder-Free 24p via 60i
Judder-Free 24p via Native Apps

The Samsung Q6F 55 is effective at removing Judder from 24p content from all sources, including when sent in a 60 fps signal from a cable box. This is different from the other Samsung QLED TVs we have reviewed this year like the Q7FN and Q9FN.

To enable the Judder reduction feature, set Auto Motion Plus to Custom, with both sliders set to 0 as shown here.

Like the other 2018 Samsung QLEDs, the backlight flicker varies quite a bit depending on the motion settings used, as shown here.

Variable Refresh Rate
Native Refresh Rate
120 Hz
Variable Refresh Rate
G-SYNC Compatible
4k VRR Maximum
60 Hz
4k VRR Minimum
48 Hz
1080p VRR Maximum
120 Hz
1080p VRR Minimum
< 20 Hz
1440p VRR Maximum
120 Hz
1440p VRR Minimum
< 20 Hz
VRR Supported Connectors

The Samsung Q6F supports FreeSync from our Xbox One S and Radeon RX 580 GPU, at 4k, 1440p and 1080p resolutions. At 1080p its range is wide enough to support Low Frequency Compensation, thus extending its lower limit below 20 Hz; unfortunately its 4k range is a much smaller 60-48 Hz, but good enough for Xbox One games that target 60 fps.

On the TV, Freesync is enabled by turning on Game Mode and setting FreeSync to On. Game mode must be on for VRR to work. Even when set to 'Auto', the TV will stay in game mode as long as Freesync is enabled. The auto function will not turn off game mode when watching a movie on an Xbox One for example.

Update 11/05/2018: The 49" model has a 60 Hz panel and does not support FreeSync.

Input Lag
1080p @ 60 Hz
15.2 ms
1080p @ 60 Hz Outside Game Mode
71.3 ms
1440p @ 60 Hz
4k @ 60 Hz
15.3 ms
4k @ 60 Hz + 10 bit HDR
15.2 ms
4k @ 60 Hz @ 4:4:4
15.3 ms
4k @ 60 Hz Outside Game Mode
54.6 ms
4k @ 60 Hz With Interpolation
21.3 ms
8k @ 60 Hz
1080p @ 120 Hz
9.4 ms
1440p @ 120 Hz
9.3 ms
4k @ 120 Hz
1080p with Variable Refresh Rate
6.6 ms
1440p with VRR
6.4 ms
4k with VRR