Review of Sony XBR 900F , Sony XBR 900F Reviewed (March 2018)

Hi folks, this weekend, lets look at a quick review of the latest 4K TV releases by Sony i.e the review of Sony XBR X900F. Other new 4K UHD models released by Sony as an upgrade include: Sony’s X850F and X800F.

As you may know, Sony already has LED E series models, which are available since last year, and the XBR X850F and XBR X900F are their newer versions. These were unveiled earlier in Feb 2018 in CES 2018 and are now available in the market.

Whats improved with the X900F vs. X900E ?

Let's look at in brief what's improved in the new range of 4k UHD TV's by Sony.
  • The new models like the Sony X900F comes with X1E Extreme processor which was not there in it’s 2017 Equivalent i.e XBR X900E (but there in the X930E)
  • Brightness was one aspect people wanted Sony to improve on and it’s reported that the X900F is 20% brighter than it’s last year precursor i.e X900E
  • There is better local dimming and you will get better upscaling of SDR to HDR content due to all this. Brightness in picture quality has improved.
  • Google Voice Assistant bundled in for voice commands is a great plus
  • With models ranging from 49″ to a full mammoth 85″ , you have more sizes to choose from now.

What sizes is the Sony X900F available in and what is the pricing?

The X900F comes in the following sizes: XBR49X900F or the 49″ XBR X900F , XBR55X900F or 55″ XBR X900F , XBR65X900F or the 65″ XBR X900F, XBR75X900F or the 75″ XBR X900F, XBR85X900F or the 85″ XBR X900F.

Pricing of the Sony X900F on Amazon.com

Sony XBR X900F review in full

Updated 2018 Review of X900F across it’s many features

1. Brightness

The X900F with the new Extreme processor and better backlighting is definitely brighter than the last year’s model at around 950 nits (at 10% window) of brightness which is pretty good (and about 200 nits more than its predecessor). This is an edge lit model but does not seem to suffer from the inconsistencies in lighting that sometimes these models do. But some light blooming is still there when we have a significantly bright object in dark background showing up suddenly, during viewing.

2. Contrast

Native contrast is 5090:1 whereas Contrast with Local Dimming is 5725:1 . This is somewhat average for UHD’s in this price range. Actually the contrast in X900E was slightly higher.

3. Color Gamut

This is a Wide Color Gamut model with measurements as follows:
DCI P3 xy: 87.7, DCI P3 uv: 93.9
Rec 2020 xy: 65 , Rec 2020 uv: 74.2
This is roughly same as the X900E specs of last year so no great improvement here.

4. Color Uniformity and 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 %
The X900 E also had comparable Color uniformity and volume. And excellent gradient when playing 10 bit content so no major changes here.

5. SDR , HDR upscaling

The X1E Extreme processor is what provides great up-scaling and picture quality in the X900F. Basically this is around 40% more powerful than the last years X900E processor and removes data noise from sub 4K sources. Result is great for DVD quality, great for Blue Ray quality and great for non HD content. I think the up-scaling performance of this TV is probably one of the best in all the current ones out there. You can turn this up-scaling off by switching on True Cinema mode. Pictures still look great, and in-fact dark scenes may even look better due to little chance of ‘blooming’ happening. Switching the upscaling ON does of-course makes pictures brighter, vivid and improves quality even more.

With HD content, the issue which the 4K TV’s have to resolve is removing judder, blur and making the motion uniform and the Motionflow technology does that. However the X900F also boasts the new X-Motion Clarify innovation. Using direct LED lighting it is able to intersperse lots of thin black frames in picture and give natural motion and feel. You can use the Custom Motion mode to feel the difference. You lose about 100 nits in brightness but since it’s pretty decent in brightness already, the natural motion more than makes up for this.

6. Wide Angle Viewing

It’s true, too, that if you have to watch the TV from an angle of more than 20 degrees off axis – either horizontally or vertically – then the light ‘blooming’ around stand-out bright objects becomes much more noticeable.This is 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. So, it’s similar to last year.

7. Motion Handling and Input Lag

Motion is handled well, because that is one area Sony tries to excel in , in its HD TV range. Input lag is an important feature for gamers and the X900F compares well with X930E in terms of input lag.
1080p @ 60Hz : 40.9 ms | 1080p @ 120 Hz : 12.9 ms | 4k @ 60Hz : 24.2 ms

The TV has a 120 Hz panel, and it can process lower frame rate content to 120 fps which is cool. There is no judder for 24p movies from whatever source. Blurring is not easily visible and almost no ghosting.

8. Ports , Inputs & Outputs

The X900F boasts a range of inputs such as:HDMI : 4 , USB : 3, Digital Optical Audio Out : 1, Analog Audio Out 3.5mm : 1, Composite In : 1, Tuner (Cable/Ant) : 1, Ethernet : 1
Supports HDR10 but not Dolby Vision

9. Smart Interface

Sony has continued with the Android Smart TV interface in the X900F, X850F and X800F. The Android interface is it’s tried and tested but the issue is that the interface is a bit too cluttered. Somewhat frequent software updates can also cause it to lag a little . It does have the Google Voice Assistant integrated which is a great relief but priority to the main streaming apps in the interface should be there.

10. Design

Trim and neat frame, but the feet on which it rests are somewhat comical and spread out, so will need a little protruding desk or cabinet to set it on. The wide legs are probably designed like this to accommodate a Sony Soundbar should you want to pimp for it.

11. Sound Quality

The Sony X900F does not have a great sound quality. It doesn’t have any Sub-bass and is prone to some distortion at high volumes.

Sony XBR X900F 65 inch

So, should you buy a Sony XBR X900F vs. the cheaper X900E ?

Our View
Well, frankly speaking the difference , as on Amazon.com, between the X900F and X900E is around $400-$500 for a 55 ” model and obviously may be higher for larger models. At this difference I would be a bit iffy about splurging but if you are someone who has bit of an extra cash to spare and gives importance to being current, then yes, you could spend a bit more for these little improvements and also getting the latest model.

The Sony X900F vs. LGs OLED B7 or LG OLED C7

The LG OLED B7 is a worthy competitor in the price range that the X900F is positioned . As on the time of this article going to print LG’s 7 range is still current for 2018 , and the LG B7A is a 2017 model. It is in similar price range of the Sony X900F but is an OLED and with somewhat superior quality, especially the contrasts. You can have a look at the review of LG OLED B7 (2017) on our website.

Having said that, for a Sony fan, the Sony XBR X900F represents a good improvement over the last year’s E series and whether it is the X850F, X800F or X900F, you will definitely find these to be in top few 4K UHD TV’s in the mid-range segment.

Image Credits: Sony website | Amazon.com.

Review Date
Reviewed Item
Sony XBR X900F
Author Rating


  1. Steve March 27, 2018
    • Sam Sethi March 27, 2018
    • Sam Sethi April 20, 2018

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