Sony A9F OLED TV Review

Tested using Methodology v1.5
Updated Oct 01, 2018 at 11:17 am
Sony A9F OLED 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 Sony A9G OLED
Resolution 4k

The Sony A9F is an outstanding OLED TV, one of the best we have ever tested. Like all OLEDs, it delivers perfectly deep blacks, and has wide viewing angles. HDR looks great thanks to the excellent wide color gamut, and the best color volume that we've measured so far on an OLED. It has excellent motion handling, low input lag, and all four HDMI ports support HDMI 2.0 full bandwidth. Unfortunately, it isn't very bright with bright white scenes. The Android 8.0 smart platform is much faster than previous Sony TVs.

Our Verdict

8.6 Mixed Usage

The Sony XBR-55A9F is an excellent TV that can handle just about anything. It is an outstanding TV for watching movies or gaming in a dark room. It has excellent motion handling and low input lag, great for fast paced content or gaming. Like all OLED TVs, there is a risk of temporary image retention and even permanent burn-in, although we don't expect this to be an issue for most people.

  • Excellent dark room performance
  • Near-instantaneous response time
  • Image remains accurate when viewed at an angle
  • Could experience permanent burn-in (see here)
  • Brightness is limited in white scenes.
9.4 Movies

The A9F is outstanding for watching movies in a dark room. The OLED panel delivers a perfect dark room viewing experience, and the image looks great, even if you are viewing from the side. It has a near instantaneous response time, which may bother some people as 24p content stutters. It is also free from 24p judder.

8.1 TV Shows

The A9F is a great choice for watching TV shows during the day. The wide viewing angles make it a perfect choice for someone that likes to move about with the TV on. It has excellent reflection handling, but might not be quite bright enough to overcome glare if you have a lot of windows. If you're a fan of the soap opera effect, the 120 Hz motion interpolation is a great option.

8.5 Sports

The Sony A9F is great for sports fans. It has excellent gray uniformity with very little dirty screen effect. Fast moving objects appear clear, with very little motion blur thanks to the near-instantaneous response time. It has wide viewing angles and good peak brightness, good for watching the big game with a large group of friends.

8.2 Video Games

Excellent TV for playing video games. It has excellent low input lag and supports all common resolutions. Fast moving objects are crisp and clear, and it has an optional black frame insertion feature to further improve motion. It has excellent dark room performance, great for late night gaming. Unfortunately, the A9F does not support any variable refresh rate technologies, like FreeSync, and there is a risk of permanent burn-in.

8.9 HDR Movies

The Sony A9F delivers a truly remarkable HDR movie experience. The infinite blacks deliver a perfect dark room experience, and the wide color gamut and very good color volume deliver outstanding picture quality. Unfortunately, it has only decent brightness in HDR, so some really bright scenes clip, and pure white scenes aren't very bright.

8.1 HDR Gaming

The A9F is an excellent TV for playing games in HDR. The OLED panel is perfect for playing in a dark room, as it delivers true blacks and perfect black uniformity. It has excellent low input lag and a near-instantaneous response time. It has decent brightness in HDR, but large white scenes aren't very bright. There is also a risk of temporary image retention and permanent burn-in.

8.2 PC Monitor

The XBR55A9F is a very good TV for use as a PC monitor. The wide viewing angles ensure an accurate image, even when sitting up close. It supports all common resolutions, and chroma 4:4:4 is displayed perfectly. Unfortunately, there is a risk of permanent burn-in when displaying static content, like menu bars, for long periods of time.

  • 8.6 Mixed Usage
  • 9.4 Movies
  • 8.1 TV Shows
  • 8.5 Sports
  • 8.2 Video Games
  • 8.9 HDR Movies
  • 8.1 HDR Gaming
  • 8.2 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 10/3/2018: Retested the brightness after firmware PKG6.0348.0059NAA. All measurements are essentially unchanged, and the TV still aggressively dims when the screen isn't moving. You can read more here.


Test Results

perceptual testing image
Curved No

The A9F has an outstanding design. It looks great, and is built with premium materials and an impressive attention to detail. The TV has excellent cable management, providing for an extremely clean look. Like the A1E, there are small rubber feet under the screen, so the screen itself is not resting on the table beneath it, and the screen tilts back slightly. Unfortunately, the design makes the A9F difficult to move, but most people are not going to be moving the TV often, so this shouldn't be an issue. 


The stand design of the A9F is very similar to the Sony A1E. The stand is large and quite bulky, but supports the TV extremely well. Like the A1E, the stand causes the TV to lean back at a slight angle. The stand cannot be removed, as it contains the majority of the TV's electronic components.

There are two sets of feet underneath the screen portion of the A9F. The inner set of feet are larger, and appear to play a larger role in supported the TV. These feet require a surface at least 12.8" (32.5 cm) wide.

Footprint of the 55" stand: 11.5" x 48.3"

Wall Mount VESA 400x200

The back of the A9F looks extremely clean with the covers on, and has excellent cable management. The back panels have a fabric cover on them, similar to speaker panels.

Borders 0.35" (0.9 cm)

The borders of the A9F are very thin. There is no noticeable gap between the border and the first row of pixels.

Max Thickness 3.62" (9.2 cm)

The display itself is quite thin, but the stand behind it is large. The stand can be folded in when wall mounted. The display portion of the screen is almost twice as thick as the LG OLED TVs, but still very thin.

The thickness measurement was taken with the stand folded in, as if the TV was wall mounted.

Build Quality

Outstanding build quality. The A9F is well built using premium materials. There are no gaps or cracks in the framing that could cause issues down the road.

Picture Quality
Picture Quality
Native Contrast
Inf : 1
Contrast with local dimming

The self-emitting technology of the OLED panel allows the TV to turn individual pixels on or off as needed. This delivers perfect blacks and an infinite contrast ratio.

Picture Quality
Local Dimming
Local Dimming
No Backlight

Like all OLED TVs, since each pixel is self-emitting there is no local dimming as each pixel can dim individually.

Picture Quality
SDR Peak Brightness
SDR Real Scene Peak Brightness
284 cd/m²
SDR Peak 2% Window
394 cd/m²
SDR Peak 10% Window
390 cd/m²
SDR Peak 25% Window
391 cd/m²
SDR Peak 50% Window
276 cd/m²
SDR Peak 100% Window
158 cd/m²
SDR Sustained 2% Window
318 cd/m²
SDR Sustained 10% Window
321 cd/m²
SDR Sustained 25% Window
318 cd/m²
SDR Sustained 50% Window
251 cd/m²
SDR Sustained 100% Window
158 cd/m²

Good peak brightness in SDR on the A9F. Overall, it is similar to the A8F. Large white scenes aren't very bright due to the TV's ABL. When Peak Luminance is set to 'Off', the A9F displays at a constant luminance of ~140 cd/m², regardless of content. In any mode, the TV automatically dims after about 2 minutes of displaying static content, and this can't be disabled.

Update 10/03/2018: Retested the brightness after firmware PKG6.0348.0059NAA. All measurements are essentially the same as before (+/- 15 cd/m²). Notably the TV's aggressive dimming over time is unchanged; sometimes the TV dims after just two minutes of static content, as shown in the plot over time. The measurements in the review have not been changed.

Update 02/27/2018: Retested the brightness using a PC as the source, so we can automate testing; previously we were using a Samsung K8500 Blu-ray player as the source, but we found that it was sending a brighter signal than a PC (perhaps by sending 'brighter than white' stimuli). The A9F was retested with the PC as the source, and treated this signal differently, causing its measured brightness to be ~50 cd/m² less; however, we consider this to be more accurate to most sources. The test scores have been updated.

Picture Quality
HDR Peak Brightness
HDR Real Scene Peak Brightness
634 cd/m²
HDR Peak 2% Window
780 cd/m²
HDR Peak 10% Window
649 cd/m²
HDR Peak 25% Window
477 cd/m²
HDR Peak 50% Window
289 cd/m²
HDR Peak 100% Window
148 cd/m²
HDR Sustained 2% Window
438 cd/m²
HDR Sustained 10% Window
372 cd/m²
HDR Sustained 25% Window
402 cd/m²
HDR Sustained 50% Window
267 cd/m²
HDR Sustained 100% Window
142 cd/m²

Decent peak brightness in HDR. Small highlights in some scenes get bright enough to stand out, but bright white scenes are dim. Overall, the A9F's HDR brightness is slightly worse than the A8F, as some small details in some scenes aren't as bright.

If you find HDR content too dim, you can adjust the Contrast and Gamma to your liking. If it is still too dim, increase the Adv. Contrast Enhancer setting to your liking.

Update 10/03/2018: Retested the brightness after firmware PKG6.0348.0059NAA. All measurements are essentially the same as before (+/- 15 cd/m²). Notably the TV's aggressive dimming over time is unchanged; sometimes the TV dims after only one minute of static content, as shown in the plot over time. The measurements in the review have not been changed.

Picture Quality
Gray Uniformity
50% Std. Dev.
1.406 %
50% DSE
0.125 %
5% Std. Dev.
0.384 %
5% DSE
0.102 %

The Sony A9F has excellent gray uniformity, similar to the LG C8 and Sony A8F. There is very little dirty screen effect, and there shouldn't be any issues watching sports. In dark scenes, as measured with the 5% gray, there are some noticeable vertical bands. This is commonly seen on OLED TVs but shouldn't cause any issues.

Picture Quality
Viewing Angle
Color Washout
49 °
Color Shift
28 °
Brightness Loss
62 °
Black Level Raise
70 °
Gamma Shift
66 °

The A9F has nearly identical viewing angles to the other 2018 OLED TVs, like the A8F and C8. Like all OLED TVs, the image remains very accurate even at wide viewing angles.

Picture Quality
Black Uniformity
Native Std. Dev.
0.357 %
Std. Dev. w/ L.D.

The Sony A9F has perfect black uniformity thanks to the OLED panel which can turn off black pixels completely.

Picture Quality
Screen Finish
Total Reflections
1.3 %
Indirect Reflections
0.1 %
Calculated Direct Reflections
1.2 %

The A9F has a glossy finish, nearly identical to the A1E. Like most high-end TVs, this TV is great in a bright room, and most reflections are significantly dimmed and have a slight purple tint.

Picture Quality
Pre Calibration
White Balance dE
Color dE
Color Temperature
6351 K
Picture Mode
Color Temp Setting
Expert 1
Gamma Setting

Good color and white balance out of the box. Like most Sony TVs, the most accurate Picture Mode out of the box is 'Custom'. The color temperature is a bit on the warm side, but this likely isn't noticeable by most people. Sony 'MASTER' TVs, including the A9F and Z9F, appear to target a different gamma to the 2.2 standard. This is strange, because previous models followed our target of 2.2 accurately in the 'Custom' picture mode.

Update 02/27/2019: Retested with the 'Gamma' setting set to '0', rather than '2' as it is by default, so the TV better tracks the 2.2 target gamma; the score has increased as a result. All test scores and pictures have been updated.

Picture Quality
Post Calibration
White Balance dE
Color dE
Color Temperature
6472 K
White Balance Calibration
10 point
Color Calibration
Auto-Calibration Function

The new Sony CMS is easier to use than LG's, and results in excellent color and white accuracy. Any remaining inaccuracies are not noticeable without specialty equipment. The gamma is flat at our target of 2.2, and the color temperature is close to our target of 6500 K.

You can see our recommended settings here.

Picture Quality
480p Input

480p content looks good, with no obvious artifacts.

Picture Quality
720p Input

720p content is displayed without any obvious issues.

Picture Quality
1080p Input

1080p content is displayed well, but when sent a 1080p signal with a 60 Hz or lower refresh rate, the A9F switches to nearest neighbor upscaling, like the Sony X900E. This type of upscaling looks more jagged than other methods, but retains the sharpness of the original image.

Picture Quality
4k Input

Native 4k content is displayed perfectly.

Picture Quality
8k Input
Picture Quality

The A9F has a RGBW pixel structures, and all four sub-pixels are never on at the same time.

Alternate pixel photo

Picture Quality
Color Gamut
Wide Color Gamut
DCI P3 xy
97.57 %
DCI P3 uv
99.18 %
Rec 2020 xy
72.20 %
Rec 2020 uv
76.34 %

The A9F has an excellent wide color gamut; slightly better than the A1E and nearly identical to the A8F. The EOTF follows the input stimulus perfectly, but clips at the TV's peak brightness. The 'Game' and 'Graphics' EOTFs are nearly identical to the 'Custom' EOTF, which is great.

If you find HDR content too dim, you can adjust the Gamma, Contrast and Adv. contrast enhancer, all of which make the TV brighter. With everything at maximum, HDR content will be noticeably brighter.

Unlike previous Sony TVs, all picture modes on the A9F and Z9F follow the same EOTF. On older models, some picture modes would have a smoother roll off at the TV's peak brightness, so there would be less clipping.

You can see our recommended settings for HDR here.

Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
87.8 %
10,000 cd/m² DCI P3 Coverage ITP
42.9 %
Normalized Rec 2020 Coverage ITP
69.9 %
10,000 cd/m² Rec 2020 Coverage ITP
33.4 %

The A9F has very good color volume, by far the best color volume we've measured on an OLED TV. It can produce deep, dark colors across most of its color gamut, but can't produce colors as bright as pure white, especially blues.

Picture Quality
Color Depth
10 Bit
Red (Std. Dev.)
0.068 dE
Green (Std. Dev.)
0.079 dE
Blue (Std. Dev.)
0.061 dE
Gray (Std. Dev.)
0.074 dE

Outstanding gradient performance, better even than the Z9F. There is slight banding in all colors, but no significant banding in any color. If you see any banding, the Smooth Gradation feature can help, but may also result in some loss of fine details.

Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.15 %
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 is very slight image retention on the A9F. These results are better than all other OLED TVs we've reviewed so far, with the exception of the LG B8. Note that there is some variation in temporary image retention performance, even between units of the same model so this difference may just be panel variance.

This test is only indicative of short term image retention and not the permanent burn-in that may occur with prolonged exposure to static images. We are currently running a test to help us better understand permanent burn-in. You can read about our investigation into this here.

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

Update 11/01/2019: Updated text to include our stance on burn-in.

Although we don't expect most people who watch varied content to have any issues, OLED TVs, such as the Sony A9F do have the possibility of experiencing burn in. There is a pixel-shift option on the A9F that will shift the entire screen by a few pixels (this is not very noticeable) to help reduce the risk of burn-in.

You can read more about our investigation into burn-in here.

Response Time
80% Response Time
0.3 ms
100% Response Time
2.5 ms

Like all OLED TVs, the Sony 55A9F has a nearly instantaneous response time. This results in almost no trail behind fast moving objects, but the lack of blur may bother some people.

PWM Dimming Frequency
0 Hz

The A9F is nearly flicker-free, like all OLED TVs, since there is no backlight. Similar to the A8F, there are small dips in brightness approximately every 8 ms that correspond with the TV's native refresh rate. These aren't noticeable under normal viewing conditions.

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 A9F can insert black frames to simulate flicker, which can help motion appear clearer. It only supports 60 Hz flicker, which can bother some people.

Unlike the LG C8, when 24p content is displayed on the A9F with BFI enabled, the BFI frequency changes to 48 Hz.

BFI is enabled on the A9F by setting Motionflow to 'Custom', Smoothness to 'Min', and Clearness to 'High'.

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

The A9F can interpolate content to match the panel's native 120 Hz refresh rate. Like most TVs, this will introduce some motion artifacts, and in scenes of heavy action the TV will sometimes stop interpolating.

To enable motion interpolation on the A9F, set Motionflow to 'Custom', and increase the Smoothness slider. For 30 fps content, you must also set CineMotion to 'Auto'.

Frame Hold Time @ 24 fps
39.2 ms
Frame Hold Time @ 60 fps
14.2 ms

Due to the near-instantaneous response time of the OLED panel, 24p motion in movies can look strange to some people and appear to stutter. This is especially noticeable in slow, wide-panning shots.

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

The A9F is judder-free when watching 24p movies from any source. From a native 24p source, no special settings are required, the A9F will automatically play them without judder. To remove judder from a 24p signal embedded in a 60p/60i source, or from the native apps, set Motionflow to 'custom', Smoothness to 'min', and CineMotion to 'auto'.

When removing judder from a 60p source, enabling BFI causes extra judder.

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
No VRR support
VRR Supported Connectors
No VRR support

The A9F has a native 120 Hz panel, but like all Sony TVs, it does not support VRR.

Input Lag
1080p @ 60 Hz
27.6 ms
1080p @ 60 Hz Outside Game Mode
110.8 ms
1440p @ 60 Hz
28.1 ms
4k @ 60 Hz
27.6 ms
4k @ 60 Hz + 10 bit HDR
27.5 ms
4k @ 60 Hz @ 4:4:4
27.5 ms
4k @ 60 Hz Outside Game Mode
94.2 ms
4k @ 60 Hz With Interpolation
86.7 ms
8k @ 60 Hz
1080p @ 120 Hz
19.9 ms
1440p @ 120 Hz
19.7 ms
4k @ 120 Hz
1080p with Variable Refresh Rate
1440p with VRR
4k with VRR
8k with VRR
Auto Low Latency Mode (ALLM)

The A9F has excellent low input lag, a significant improvement over the A8F, but worse than the LG C8 and Sony Z9F.

1080p @ 120 Hz has even lower input lag, great for gaming, and unlike previous Sony TVs it is no longer necessary to force the resolution.

Supported Resolutions