Sony X900F TV Review

Tested using Methodology v1.4
Updated Mar 16, 2018 at 07:47 pm
Sony X900F Picture
Test Methodology v1.4
Mixed Usage
Value for price beaten by
: none
TV Shows
Video Games
HDR Movies
HDR Gaming
PC Monitor
Type LED
Resolution 4k

The Sony X900F is a great 4k TV with impressive picture quality, especially in a dark room due to the high native contrast ratio and full array local dimming support. The TV excels at HDR as it can produce bright, vivid highlights. Motion handling is also excellent due to the fast response time and ability to flicker the backlight to clear up motion. The only main negative is the narrow viewing angle, so the best image quality is reserved for those directly in front of the TV.

Our Verdict

8.3 Mixed Usage

Great TV for a range of usages. High contrast ratio and local dimming results in great dark scene performance for watching movies in a dark room. Input lag is low, especially at 4k, and motion handling is excellent which is great for gaming. The TV can produce bright, saturated highlights for HDR. Unfortunately, the image degrades when viewed at an angle.

See our Mixed Usage recommendations
8.4 Movies

Great movie performance. Blacks are deep and uniform, with local dimming to improve dark scenes. The picture quality is great and colors are accurate out-of-the-box. 24p movies are displayed smoothly, which is good.

See our Movies recommendations
8.1 TV Shows

Great for watching TV in a bright room. Image gets bright which helps to overcome ambient glare, and the reflection handling is impressive. Picture quality is also great. Unfortunately, the Android smart platform isn't as good as the competition and the image degrades when viewed at an angle.

See our TV Shows recommendations
8.0 Sports

Great sports performance. Excellent motion handling, image remains clear even with fast-paced sports like hockey or football. The Sony X900F can flicker the backlight to clear up motion further. The TV can overcome and handle reflections well in most rooms. Unfortunately, the image degrades when viewed at an angle, so the best experience is directly in front of the TV.

See our Sports recommendations
8.5 Video Games

Great TV for gamers. Input lag is low, especially at 4k so the TV feels responsive. Motion handling is excellent, and the TV can flicker the image to clear up blur. The picture quality is great, especially in a dark room due to the high native contrast ratio and local dimming.

See our Video Games recommendations
8.3 HDR Movies

HDR movies look great. The Sony X900F supports HDR10 and Dolby Vision. The picture quality is great, with a high native contrast ratio and good uniformity, and the TV can create bright, vivid highlights for HDR.

See our HDR Movies recommendations
8.5 HDR Gaming

Great for gaming in HDR, such as with the Xbox One X or PS4 Pro. Input lag is low at 4k, and motion handling is excellent so fast-paced games feel responsive. The TV supports HDR10 and can produce bright, saturated highlights thanks to the high peak brightness and wide color gamut.

See our HDR Gaming recommendations
8.5 PC Monitor

Great TV for PC use. The TV feels responsive thanks to low input lag and excellent motion handling. It supports chroma 4:4:4 for clear text across all backgrounds but unfortunately, the viewing angle is poor, so the edges of the screen darken when viewed from up-close.

See our PC Monitor recommendations
  • 8.3 Mixed Usage
  • 8.4 Movies
  • 8.1 TV Shows
  • 8.0 Sports
  • 8.5 Video Games
  • 8.3 HDR Movies
  • 8.5 HDR Gaming
  • 8.5 PC Monitor
  • Deep and uniform blacks
  • Excellent motion handling
  • Bright HDR highlights
  • Picture quality degrades at an angle
  1. Update 2/19/2020: Converted to Test Bench 1.4.
  2. Update 2/19/2020: Converted to Test Bench 1.4.
  3. Update 4/9/2019: An app update has added ads to the home screen. We have updated the ad-free box.
  4. Update 2/28/2019: Converted to Test Bench 1.3. Learn more about our versioned test bench system here.
  5. Update 1/9/2019: The latest YouTube app update, version 2.04.05, now supports HDR.
  6. Update 8/13/2018: We have retested the input lag with the latest firmware (PKG6.5603.0175NAA) and it remains the same.
  7. Update 6/12/2018: It turns out 1080p @ 120 Hz is possible, when the Xbox's connection type is changed from Auto-detect (Recommended) to HDMI, but unfortunately in this mode 4k and HDR aren't supported.
  8. Update 6/11/2018: Dolby Vision support has been added as of firmware (PKG6.5603.0175NAA); the scores have been updated. Also a note for Xbox One X and Xbox One S owners: 120 Hz from the Xbox will not work with this TV (and all 2018/2017 Sony's we've tested), because the TV requires a forced resolution for 120 Hz to be displayed.
  9. Update 5/2/2018: The color gamut was erroneously measured at a 50% stimulus. It has been remeasured at 75% stimulus to be in line with our other TVs.

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Test Results

perceptual testing image
Curved No

The design of the Sony 2018 X900F is great. It is quite different to the 'traditional' Sony aesthetics from the last few years, such as the X900E. The wide-set legs are the most noticeable difference, and do require a larger table but are designed so that the Sony soundbar can fit between them. There is basic cable management similar to the X900E down the back of the stand, but it isn't as good as the X930E which includes routing through the back panel. The build quality is very good and the TV feels solid.


The stand is much wider than most other Sony TVs, as it leaves space for a soundbar between the two legs. It supports the TV well and feels secure. It also provides a channel at the rear of the legs to route cables through, which is good.

Footprint of the 55" TV stand: 39.2" x 10.6"

Wall Mount VESA 300x300

The rear of the TV is quite basic, and is very similar to last year's model. There are two groups of inputs on the rear of the TV. One is inset and directed down, and can be difficult to access if the TV is placed close to the wall. The second group is directed out the side of the TV and provides easier access.

Borders 0.35" (0.9 cm)

The borders of the TV are quite thin, and look good. They look almost identical to other Sony TVs.

Max Thickness 2.76" (7.0 cm)

The TV has an average thickness when viewed from the side. It will stick out from the wall a bit more than some other TVs such as the X930E, but this isn't too much of an issue.

Build Quality

The build quality of the X900F is good, and although the TV is almost entirely plastic, it does feel well constructed and solid.

Picture Quality
Picture Quality
Native Contrast
5089 : 1
Contrast with local dimming
5725 : 1

The native contrast ratio is excellent. When set in a dark room, it can display really deep blacks, making the TV a very good option if you have a dark home theater room.

When the local dimming is turned on, the contrast ratio on the checkerboard pattern goes up, but not by much since the zones are not small enough to have an impact on this pattern.

Picture Quality
Local Dimming
Local Dimming

The full array local dimming of the Sony X900F is decent and better than most LED TVs. It is a small upgrade when compared to the 2017 X900E. The X900F performance is more similar to the 2017 Sony X930E when set side by side, although the X930E has slightly less abrupt transitions of the zones on movements.

Very similar performance to the Samsung Q8FN. The X900F has deeper black levels, but there is more visible blooming.

When set to 'High', the feature is very good at limiting blooming and keeping a good overall black level, but on some occasions, it may be a bit too aggressive, as small highlights can get dimmed on fast movements. Therefore, if you notice this behavior, you can set it the 'Medium', and it should behave more conservatively.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
578 cd/m²
SDR Peak 2% Window
781 cd/m²
SDR Peak 10% Window
962 cd/m²
SDR Peak 25% Window
781 cd/m²
SDR Peak 50% Window
581 cd/m²
SDR Peak 100% Window
641 cd/m²
SDR Sustained 2% Window
700 cd/m²
SDR Sustained 10% Window
943 cd/m²
SDR Sustained 25% Window
776 cd/m²
SDR Sustained 50% Window
577 cd/m²
SDR Sustained 100% Window
638 cd/m²

Great SDR peak brightness, good enough for even a bright room. The TV's local dimming does a good job of boosting bright sections of the screen when other sections are dimmer, shown by how the smaller window tests are brighter than the larger ones. Overall, this brightness is a marked improvement over last year's X900E, and is far better than the brightness of many competing TVs like the Samsung MU8000 and LG SJ8500, though still not as bright as last year's X930E.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
894 cd/m²
HDR Peak 2% Window
828 cd/m²
HDR Peak 10% Window
988 cd/m²
HDR Peak 25% Window
764 cd/m²
HDR Peak 50% Window
648 cd/m²
HDR Peak 100% Window
653 cd/m²
HDR Sustained 2% Window
788 cd/m²
HDR Sustained 10% Window
974 cd/m²
HDR Sustained 25% Window
761 cd/m²
HDR Sustained 50% Window
645 cd/m²
HDR Sustained 100% Window
651 cd/m²

Update 04/18/2019: There are some brightness issues playing Dolby Vision content from an external source on the X950G and X900F. Find out more here.

Great HDR peak brightness; bright highlights in HDR content will be shown fairly bright, though not quite as bright as the 1000-4000 cd/m² they're intended to be. The TV's local dimming is able to boost highlights to be very bright, because the rest of the scene in HDR content is usually fairly dim when compared to SDR content, so the TV has more power budget for the hightlights. Overall the HDR brightness is better than last year's X900E.

Picture Quality
Gray Uniformity
50% Std. Dev.
4.335 %
50% DSE
0.165 %
5% Std. Dev.
0.812 %
5% DSE
0.103 %

The gray uniformity is good. The 50% gray uniformity looks good, and the issues are mostly situated near the edge and corners, which are darker than the center of the screen. Besides that, dirty screen effect is not problematic since the center of the screen is even and it is not noticeable when watching sports like hockey, a sport where the slightest uniformity issues are usually very easy to see.

Looking at the 5%, we can see that both bottom corners are a bit brighter than the center and this is mostly due to the clouding of the panel, as the same brighter zone are also visible on the black uniformity. In any case, this is almost not noticeable when watching normal content, and as such, is not problematic.

Picture Quality
Viewing Angle
Color Washout
24 °
Color Shift
19 °
Brightness Loss
40 °
Black Level Raise
14 °
Gamma Shift
14 °

Bad viewing angle, but fairly typical for a TV with a VA panel. Colors and blacks degrade significantly when viewed from even a small angle, while brightness degrades less at an angle. This bad viewing angle makes this TV not well suited for a room where people often sit to the side of the TV and view it at an angle; in such cases an IPS TV with a good viewing angle, like the LG SJ8500, may be better.

Picture Quality
Black Uniformity
Native Std. Dev.
0.923 %
Std. Dev. w/ L.D.
1.056 %

The Sony X900F black uniformity is very good. Looking at the native black uniformity picture (when the local dimming is turned completely off) our unit has some faint flashlighting, especially near the edge and the corners of the TV. The clouding is not too strong and when looking at normal content, should not be too apparent.

Turning on local dimming hides most issues, but it comes at the cost of blooming around bright objects (like the center cross in this picture).

Note that the screen uniformity varies per unit, and another X900F could be better or worse than the unit we bought.

Picture Quality
Screen Finish
Total Reflections
3.5 %
Indirect Reflections
0.4 %
Calculated Direct Reflections
3.1 %

The reflection handling of the Sony X900F is great. The semi-gloss finish does diffuse reflections slightly, but not as much as more hazy TVs such as the Samsung MU8000. The anti-reflective coating works well to reduce the total reflections and provides very similar performance to last year's X900E. This should be fine for most rooms, but reflections may be distracting in a very bright room or if sunlight falls directly on the TV.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6537 K
Picture Mode
Color Temp Setting
Expert 1
Gamma Setting

Out of the box, the accuracy of the Sony X900F is excellent, and for most people, this TV could be used right away without the need for any calibration.

The most accurate picture mode out of the box is the 'Custom' picture mode, and it is also one of the picture modes that gives you the most control over all the picture setting available.

The 'Cinema Pro' is also very accurate, but this picture mode targets a gamma closer to 2.4, rather than our desired 2.2 target.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6495 K
White Balance Calibration
10 point
Color Calibration
Auto-Calibration Function

The accuracy is outstanding after calibrating the white balance. Unfortunately, the lack of color management system on Sony's TVs can't be corrected further.

Overall, the calibration here did only bring some small corrections, as the TV was already very accurate out of the box, and the process was very fast and without issues.

You can see our recommended settings here.

Picture Quality
480p Input

Upscaling of low quality 480p content such as DVDs is good. Some halo artifacting is visible along edges, but there is a good range of options to customize the upscaling depending on preferences.

Picture Quality
720p Input

720p content such as cable is upscaled well. Edges are smoothed to reduce blockyness, and some haloing artifacts are visible.

Picture Quality
1080p Input

1080p sources such as Blu-rays look great once upscaled. The X900E was able to apply direct nearest neighbor upscaling when in the 'Graphics' picture mode, but this isn't available on the X900F (similar to the X930E with the same X1 Extreme Processor).

Picture Quality
4k Input

Native 4k content such as UHD Blu-rays or high quality streaming content is displayed without any issues.

Picture Quality
8k Input
Picture Quality

The pixels look almost identical to the X900E as seen here, however, there is a small notch at the bottom of each sub-pixel.

Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
88.01 %
DCI P3 uv
93.93 %
Rec 2020 xy
64.78 %
Rec 2020 uv
72.51 %

Great wide color gamut; saturated colors in HDR content will be shown fairly well, but not quite as well as some other TVs like the LG OLED B7A. The TV's color accuracy for less saturated colors is also fairly good, so the overall HDR image will be accurate.

The TV's HDR EOTF follows the target PQ curve very closely up until it rolls off and clips at its peak brightness. The EOTFs in the 'Game' and 'Graphics' picture modes also follow the target closely. Users who want a brighter HDR image can increase the TV's 'Gamma' and 'Adv. contrast enhancer' settings, which will raise the EOTF to be brighter than the target curve.

Update 05/02/2018: The color gamut was erroneously measured at a 50% stimulus. It has been remeasured at 75% stimulus to be in line with our other TVs. The results remain almost identical.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
78.8 %
10,000 cd/m² DCI P3 Coverage ITP
45.4 %
Normalized Rec 2020 Coverage ITP
62.4 %
10,000 cd/m² Rec 2020 Coverage ITP
36.0 %

Decent color volume in HDR. The Sony X900F's local dimming does a good job of extending its wide color gamut down to a range of different brightness, so darker colors will look as saturated as brighter colors.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.092 dE
Green (Std. Dev.)
0.083 dE
Blue (Std. Dev.)
0.083 dE
Gray (Std. Dev.)
0.057 dE

Excellent gradient performance; no major banding is visible during normal usage when playing 10 bit content (such as HDR). When playing SDR some banding may be visible when the content is 8 bit, but this banding can be reduced by enabling Sony's "Smooth Gradation" feature.

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 %

No temporary image retention could be noticed on the Sony X900F white running our test. This is good for those wanting to use this TV as a PC monitor. Note that this is a different result from our 2017 X900E, as the later did show sign of very faint image retention.

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

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

Response Time
80% Response Time
3.1 ms
100% Response Time
10.2 ms

Excellent pixel response time, good enough for fast-moving content. Most of the blur in the photo is caused by 60 fps persistence; almost no ghosting trail is visible behind the moving logo, which is excellent. One flaw though is the severe overshoot on the 0-20% transition; this means that some bright ghosting may be visible in dark scenes during fast motion.

PWM Dimming Frequency
720 Hz

The backlight does flicker, unlike some other Sony TVs like the 2017 X800E; and this flicker is always present, even at maximum backlight. However, because the flicker frequency is a very fast 720 Hz it will be almost unnoticeable to most people.

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

The 2018 Sony X900F can flicker its backlight at 120 Hz, which makes motion look clearer by reducing persistence blur. Unfortunately, it can't flicker at 60 Hz, so 60 Hz content will have visible duplications in its motion, but some may find it preferable to no flicker. On Sony TVs, BFI is activated by setting "Motionflow" to "Custom" and increasing the "Clearness" slider.

Sony has implemented a new BFI mode on "Clearness = 1", which they call "X-Motion Clarity". When in this mode the real scene brightness decreases by about 60 nits compared to with no flicker("Clearness = 0"), but as the brightness of the screen decreases its flicker becomes more severe, similar to how a TV with PWM dimming behaves. When this is combined with local dimming, dimmer zones of the screen will have clearer motion than brighter zones. This is different from the flicker behavior in "Clearness" 2 and Max, where zones of different brightness will have similar flicker and motion clarity. We recommend "Clearness = 1" when users want clearer motion but don't want to sacrifice too much screen brightness. Note that none of these 'Clearness' settings affect the input lag in the 'Game' picture mode.

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

The TV has a 120 Hz panel, and its processing can interpolate lower frame rate content to 120 fps to match the panel. This optional feature is also called the "soap opera effect". It produces smoother looking motion but can look unnatural to some people, and also adds small artifacts in its processing that can be bothersome to some.

Frame Hold Time @ 24 fps
31.5 ms
Frame Hold Time @ 60 fps
6.5 ms

The TV is decent at showing low frame rate content smoothly (like movies and 30fps video games), but the TV's fast pixel response time can make motion look a little stuttery, especially in wide panning scenes, because the frame stays static for 31 ms. 60 fps content looks smoother because the frames are on screen for a shorter amount of time.

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

The Sony X900F can display, without judder, 24p movies no matter from which sources they are playing. To achieve this though for every source including the native Netflix app, you need to set (from the Motion tab in the picture setting) the 'Motionflow' to 'True cinema' and set 'CineMotion' to 'High'. This isn't needed for direct 24p sources.

Variable Refresh Rate
Native Refresh Rate
120 Hz
Variable Refresh Rate
G-SYNC Compatible
4k VRR Maximum
4k VRR Minimum
No VRR support
1080p VRR Maximum
1080p VRR Minimum
No VRR support
1440p VRR Maximum
1440p VRR Minimum
VRR Supported Connectors
No VRR support

The TV doesn't support a variable refresh rate.

Input Lag
1080p @ 60 Hz
40.9 ms
1080p @ 60 Hz Outside Game Mode
103.5 ms
1440p @ 60 Hz
23.4 ms
4k @ 60 Hz
24.2 ms
4k @ 60 Hz + 10 bit HDR
24.2 ms
4k @ 60 Hz @ 4:4:4
24.1 ms
4k @ 60 Hz Outside Game Mode
86.9 ms
4k @ 60 Hz With Interpolation
80.9 ms
8k @ 60 Hz
1080p @ 120 Hz
12.9 ms
1440p @ 120 Hz
13.3 ms
4k @ 120 Hz
1080p with Variable Refresh Rate
1440p with VRR
4k with VRR