Samsung Q8FN/Q8/Q8F QLED 2018 TV Review

Tested using Methodology v1.5
Updated Apr 26, 2018 at 11:36 am
Samsung Q8FN/Q8/Q8F QLED 2018 Picture
Mixed Usage
Value for price beaten by
: Not at the latest test bench
Value for price beaten by
: Not at the latest test bench
TV Shows
Value for price beaten by
: Not at the latest test bench
Value for price beaten by
: Not at the latest test bench
Video Games
Value for price beaten by
: Not at the latest test bench
HDR Movies
Value for price beaten by
: Not at the latest test bench
HDR Gaming
Value for price beaten by
: Not at the latest test bench
PC Monitor
Value for price beaten by
: Not at the latest test bench
This TV was replaced by the Samsung Q80/Q80R QLED
Type LED
Resolution 4k

The Samsung Q8F / Q8 is a 2018 QLED TV with great picture quality, especially in a bright room due to the high peak brightness and excellent reflection handling. It performs very well for any usage with great motion handling, an excellent response time, and very low input lag. Unfortunately, the image loses accuracy when viewed at an angle and the gray uniformity is only decent.

Note that this is a different TV to the 2017 QLEDs such as the Q7F and Q8C. The 2018 Q8FN is also called Q8F or Q8.

Our Verdict

8.2 Mixed Usage

Great TV for a wide range of usages. The Samsung Q8F can produce deep and uniform dark scenes when viewed in a dark room. Local dimming is also decent at reducing blooming and producing bright highlights. Motion handling is great, and the response time is fast so motion is clear. It isn't perfect though, as the image loses accuracy when viewed at an angle and some dirty screen is visible, especially when watching sports.

  • Excellent wide color gamut
  • Feels responsive due to low input lag
  • Great motion handling
  • Picture quality degrades at an angle
8.3 Movies

Excellent for watching movies in a dark room. Picture quality is great due to the high native contrast ratio and decent local dimming. Blacks also appear uniform, which is great. 24p movies from most sources are also shown without any judder, which is great.

8.2 TV Shows

Great for watching TV in a bright room. The whole screen can get bright, which combined with the reflection handling is excellent for overcoming glare even in very bright rooms. The smart platform is also very good for browsing Netflix or watching content on YouTube. Unfortunately, the picture loses accuracy at an angle.

8.1 Sports

Great TV for sports fans. The Samsung Q8 can get bright to overcome glare in a bright room, and reflection handling is excellent. Motion handling is great, so fast-paced content remains clear and detailed. Unfortunately, the best picture quality is reserved for those directly in front of the TV, so those with wide seating may be disappointed.

8.3 Video Games

Excellent for gamers. Input lag is low, so the TV feels responsive regardless of the input signal. Motion handling is also great due to the fast response time and ability to flicker the backlight to clear up motion. The TV also supports motion interpolation with low input lag in game mode, which is great for a smooth gaming experience.

8.2 HDR Movies

Excellent TV for HDR movies in a dark room. Picture quality is great, and the TV can produce deep dark scenes with the high native contrast ratio and decent local dimming. It can also produce very bright and vivid highlights due to the wide color gamut.

8.3 HDR Gaming

Excellent choice for HDR gaming. The Samsung Q8 has a low input lag and fast response time, so the TV feels responsive and fast motion is clear. Also, the TV supports HDR well with a high peak brightness and can produce bright highlights. The TV can also interpolate games while keeping a low input lag, which is great for smooth play.

7.9 PC Monitor

Great choice for a PC monitor. Picture quality is good. The TV supports chroma 4:4:4 for clear text across all backgrounds, and it has low input lag so the TV feels very responsive. It also has a low response time, so fast motion is clear. Unfortunately, the viewing angles are poor so the sides of the screen lose accuracy when viewed from up-close.

  • 8.2 Mixed Usage
  • 8.3 Movies
  • 8.2 TV Shows
  • 8.1 Sports
  • 8.3 Video Games
  • 8.2 HDR Movies
  • 8.3 HDR Gaming
  • 7.9 PC Monitor
  1. Updated May 21, 2020: Converted to Test Bench 1.5.
  2. Updated Feb 21, 2020: Converted to Test Bench 1.4.
  3. Updated Feb 28, 2019: Converted to Test Bench 1.3.
  4. Updated Jun 11, 2018: 1440p @ 120 Hz input lag has decreased as of firmware 1103. The review has been updated.
  5. Updated Jun 08, 2018: FreeSync has been tested and the scores have been updated.
  6. Updated May 23, 2018: Firmware version 1103 has added Freesync support. We are currently testing it and will update the review shortly.


Test Results

Curved No

The design of the Samsung 2018 Q8 is great. It has a very modern look with sleek lines and a nice finish. The legs are solid and wide set, but they might not fit on some tables. It includes the same excellent cable management system found in the NU8000. The TV does not include the OneConnect box found on the higher-end Q9FN. The connections are all side-facing but in the TV frame, so it is difficult to reach the connections when the TV is wall-mounted.


The stand is sleek and modern. The stand feels solid and well built. The legs are set far enough apart to put a soundbar directly in front of the screen, but they might not fit on some tables.

Footprint of the 55" TV Stand: 9.7" x 38.1"

Wall Mount VESA 200x200

The back of the Q8FN is nearly identical to the NU8000. It has the same cable management system which works exceptionally well for guiding all of the cables either through the legs or through the bottom of the TV when wall-mounted.

The inputs are all inset into the back of the TV and are difficult to reach if wall mounted.

Borders 0.51" (1.3 cm)

The frame of the TV is thin, there is a very small gap between the edge of the frame and the first pixels, but it is not noticeable.

Max Thickness 2.28" (5.8 cm)

Very uniform thickness, the TV is thicker than the LG OLEDs but still quite thin. It sits flush to the wall when wall mounted.

Build Quality

Excellent build quality. There are no gaps in the construction. It is mostly plastic but there are some metal parts. It feels well built and solid. The back panel has a lot of flex in the middle where the VESA mounts are located, and the corners of the bezel are slightly cracked but this should not cause any issues.

Picture Quality
Picture Quality
Native Contrast
5551 : 1
Contrast with local dimming
7957 : 1

Excellent contrast ratio on the Samsung Q8F. It features a full array local dimming feature and is able to get very deep blacks. To measure the native contrast ratio without local dimming we had to disable it in the advanced service menu, as local dimming cannot be disabled in the standard menu.

Picture Quality
Local Dimming
Local Dimming

Decent local dimming on the Q8FN, very similar to the Sony X900F. The Q8FN does not completely turn off zones that were far away from our test dot. The Q8FN has less visible blooming than the X900F, but the black levels are not as deep.

Update 01/08/2019: The Q8FN in Europe does not have a full array local dimming feature, but is instead edge-lit. Samsung has instead released the Q8DN, which has the same full array local dimming feature as the one we have tested.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
543 cd/m²
SDR Peak 2% Window
803 cd/m²
SDR Peak 10% Window
1397 cd/m²
SDR Peak 25% Window
754 cd/m²
SDR Peak 50% Window
614 cd/m²
SDR Peak 100% Window
555 cd/m²
SDR Sustained 2% Window
792 cd/m²
SDR Sustained 10% Window
1341 cd/m²
SDR Sustained 25% Window
751 cd/m²
SDR Sustained 50% Window
613 cd/m²
SDR Sustained 100% Window
554 cd/m²

Excellent peak brightness with SDR content. Highlights are very bright and stand out. The 2018 Q8FN is much brighter than last year's Q8C. Real scenes are not as bright as our test windows, but still bright enough for most rooms.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
628 cd/m²
HDR Peak 2% Window
969 cd/m²
HDR Peak 10% Window
1233 cd/m²
HDR Peak 25% Window
1278 cd/m²
HDR Peak 50% Window
684 cd/m²
HDR Peak 100% Window
495 cd/m²
HDR Sustained 2% Window
946 cd/m²
HDR Sustained 10% Window
1200 cd/m²
HDR Sustained 25% Window
1258 cd/m²
HDR Sustained 50% Window
681 cd/m²
HDR Sustained 100% Window
493 cd/m²

Very good brightness with HDR content. Small highlights are hitting the target 1000 cd/m² that HDR is mastered for. The screen brightness dips considerably with very bright scenes, but is still good for a bright room. Similar brightness to the LG C8, but with brighter highlights in very dark scenes, as shown by the small window tests.

Update 04/27/2018: The text has been edited for clarification.

Picture Quality
Gray Uniformity
50% Std. Dev.
3.354 %
50% DSE
0.205 %
5% Std. Dev.
1.155 %
5% DSE
0.104 %

Decent gray uniformity, but worse than last year's Q8. The sides of the Q8FN are darker than the rest of the screen, but this isn't as noticeable as when it is in the center. The center of the screen is not uniform, this will be noticeable when watching sports like hockey or football with large areas of uniform color in the center of the screen.

Picture Quality
Viewing Angle
Color Washout
24 °
Color Shift
16 °
Brightness Loss
34 °
Black Level Raise
13 °
Gamma Shift
22 °

The Samsung Q8 has a poor viewing angle, the picture quality degrades when viewed off angle. Blacks turn gray and colors shift even with a small angle. This TV is not a good choice for a room with side seating or even with a large couch. These results are typical of VA-type panels. OLED panels like the LG C7 have much better viewing angles.

Picture Quality
Black Uniformity
Native Std. Dev.
0.855 %
Std. Dev. w/ L.D.
0.834 %

Great black uniformity. We disabled the local dimming feature in the hidden service menu to get an accurate test. Without local dimming there is some clouding visible around the cross, but dark room viewing should still be great for most people.

With local dimming on max there is less clouding around the cross. The full array local dimming is effective at turning off zones.

This is a significant improvement over the 2017 Q8F/C, as it was edge-lit and could not fully disable the dimming zones around the test cross, which causes lots of vertical blooming.

Picture Quality
Screen Finish
Total Reflections
1.2 %
Indirect Reflections
0.3 %
Calculated Direct Reflections
0.8 %

The 2018 Q8FN has excellent reflection handling. Reflections are well defined but at a much lower intensity, as such there is much less glare. The anti-reflection coating gives reflections a slight purple tint, but this isn't really noticeable. This TV is excellent even for a very bright room.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6196 K
Picture Mode
Color Temp Setting
Warm 2
Gamma Setting
BT.1886 +2, Brightness +2

Sub-par color accuracy out of the box. The best settings pre-calibration are with the Movie picture mode. Even in this mode, the Gamma does not tracking our target, and both white balance and color dE are too high. The color temperature is too warm, colors are shifted with more of a red-yellowish tint.

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
6476 K
White Balance Calibration
20 point
Color Calibration
Auto-Calibration Function

After calibrating on the Movie picture mode, with color temperature set to 'Warm1', white balance is corrected and the color temperature is much closer to our target. Gamma follows our target curve perfectly. The color space settings are not very useful and it was not possible to fully correct color accuracy, although it is good enough that most people won't notice.

You can see our recommended settings here.

Picture Quality
480p Input

Upscaling of DVDs or classic game consoles is good. Edges are smooth without any loss of detail.

Picture Quality
720p Input

720p content like from a cable box is scaled well on the Samsung Q8, there is no obvious over softening or upscaling artifacts.

Picture Quality
1080p Input

1080p content from a Blu-ray player or non-4k game console looks good.

Picture Quality
4k Input

Native 4k content is played without any issues.

Picture Quality
8k Input
Picture Quality
Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
97.99 %
DCI P3 uv
98.72 %
Rec 2020 xy
74.08 %
Rec 2020 uv
80.89 %

Excellent wide color gamut. The Q8FN can display nearly 100% of the P3 color space, and has the highest Rec.2020 coverage we have ever seen, although it is very close to the 2017 Q9F.

The Movie mode follows the PQ curve almost perfectly until it rolls off at the TV's peak brightness. The Game EOTF curve also follows our input closely, which is good.

Update 04/26/2018: PC mode's EOTF also follows the target fairly well, although it is a little dimmer.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
94.4 %
10,000 cd/m² DCI P3 Coverage ITP
52.0 %
Normalized Rec 2020 Coverage ITP
74.7 %
10,000 cd/m² Rec 2020 Coverage ITP
40.8 %

The Samsung Q8F has outstanding color volume. Like other Samsung TVs, it can't produce deep, dark colors, and also can't produce overly saturated greens at a range of brightness levels. It is a definite improvement over the 2017 Q8C and the 2018 NU8000.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.124 dE
Green (Std. Dev.)
0.143 dE
Blue (Std. Dev.)
0.096 dE
Gray (Std. Dev.)
0.129 dE

The Samsung Q8FN does a good job displaying our test gradient. There is some banding visible, especially in the darker colors.

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 %

Like most Samsung TVs, there is no temporary image retention on the Q8FN.

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
4.0 ms
100% Response Time
12.9 ms

The Q8FN has an excellent response time with very little overshoot. The left and right sides of the chart do not line up due to the local dimming feature.

PWM Dimming Frequency
480 Hz

The Q8FN uses PWM to dim the backlight, and it flickers regardless of backlight setting, even at 100%. The flicker changes considerably depending on settings. Normally, it flickers at 480 Hz, which shouldn't be noticeable and creates little motion duplication. This is much better than last year's Q8C, and almost as good as Sony's X900F.

When in 'Game Mode', or if 'Auto Motion Plus' is enabled, the backlight changes to a 120 Hz flicker which is more noticeable. When we sent a 1080p 120 Hz signal, the backlight changed to 360 Hz.

Here is a plot of the different backlight settings.

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 Q8FN has an optional BFI mode called 'LED Clear Motion' that adjusts the flicker depending on the content to help motion appear more clear.

BFI on the Q8FN is able to flicker at a variety of frequencies, as low as 60Hz to help fluidity of motion with 60 fps content. Similarly to the NU8000, it is also available in 'Game Mode'.

When in 'Game Mode', or if 'Auto Motion Plus' is enabled, the backlight changes to a 120 Hz flicker, and with a 1080p 120 Hz signal it changed to 360 Hz. You can see a plot of the results here.

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

The Samsung 2018 Q8FN has a 120Hz panel, and can interpolate lower frame rate content up to 120 Hz. This helps motion appear much smoother, but it can sometimes get it wrong and cause motion artifacts. In scenes with lots of motion the TV stops interpolating, preferring to maintain quality similar to the LG C8. This effect can look strange to many people and is also known as the 'Soap Opera Effect'.

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.

The flicker changes to 120 Hz when 'Auto Motion Plus' is enabled as seen here

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

Each 24 fps frame is displayed for nearly half the cycle, which can make this type of content stutter, especially with wide panning shots. 60 fps content appears smooth and is a good improvement over the 2017 Q8.

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

The Q8FN is almost always judder-free, but when playing 24p content through a streaming device at 60i, it was inconsistent. This result is unexpected, although we have similar results with other Samsungs we have tested. We will retest this with each firmware update. This will not be an issue for most people.

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 Q8FN does not support FreeSync from our Radeon RX 580 GPU. We tried multiple combinations of 'Game Mode', 'PC Mode' and different refresh rates but FreeSync was never detected as supported.

Update 05/23/2018: Firmware version 1103 has added Freesync support. We are currently testing it and will update the review shortly.

Update 06/08/2018: FreeSync has been tested and the score has been updated. FreeSync was supported from our Xbox One S and our Radeon RX 580 GPU, in 1080p, 1440p and 4k resolutions. FreeSync is activated by enabling the TV's Game mode and FreeSync settings; PC mode is not required. We tested in Ultimate mode because it has the widest range, and we only recommend Basic mode when you experience problems with Ultimate.

Input Lag
1080p @ 60 Hz
20.0 ms
1080p @ 60 Hz Outside Game Mode
73.0 ms
1440p @ 60 Hz
4k @ 60 Hz
19.7 ms
4k @ 60 Hz + 10 bit HDR
19.0 ms
4k @ 60 Hz @ 4:4:4
16.6 ms
4k @ 60 Hz Outside Game Mode
56.0 ms
4k @ 60 Hz With Interpolation
20.8 ms
8k @ 60 Hz
1080p @ 120 Hz
10.8 ms
1440p @ 120 Hz