What is the Hisense 55N6800?
Connections & Control
The sideways facing connections are composed of two more HDMI inputs (4K/60p, HDR, CEC and HDCP 2.2), one of which supports ARC (Audio Return Channel) and the other supports MHL (Mobile High-Definition Link). There are also three USB ports (two 2.0 and one 3.0), Freeview HD and satellite tuners, a headphone jack, and a CI (Common Interface) slot.
Features & Specs
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Hisense H55N6800 Recommended TV Settings
Picture Settings – Out-of-the-Box
All our measurements were taken with a Klein K-10A colour meter, a Murideo Fresco Six-G pattern generator and CalMAN Ultimate calibration software. For more information on how to correctly set up your Hisense TV, you can watch the settings video above or take a look at our PicturePerfect Guide.
Picture Settings – Calibrated
Picture Settings – High Dynamic Range
We measured the Perceptual Colour Volume, which uses the PQ EOTF out to 10,000nits and the Rec. 2020 colour gamut represented using the ICtCp colour graph which takes into account human visual perception. This measurement uses 393 data points and delivers a number expressed in Millions of Distinguishable Colours (MDC). Here the 55N6800 delivered an MDC number of 259 which, whilst slightly higher than the H65N6800, still reflects the TV's lower peak brightness and slightly smaller colour gamut.
Black Levels and Contrast RatiosThe H55N6800 uses a VA panel and thus delivered a native black level of 0.023nits, which is good for an LCD TV. The panel could also easily hit our standard dynamic range target of 120nits, which resulted in an on/off contrast ratio of 5217:1, whilst the ANSI contrast ratio was a very reasonable 4038:1. Once again Hisense were commendably honest in their specifications, with a claimed contrast ratio of 4000:1 which matches our measurements almost precisely. The shadow detail was also quite good, although this isn't an area where LCD panels are strong and there could be a slight loss of detail in more challenging material.
Backlight Uniformity and Viewing AnglesBacklight uniformity is always something of a lottery when it comes to edge-lit LED LCD TVs and so it proved with the H55N6800 which wasn't quite as good as the 65-inch version we reviewed. There was a small amount of clouding that was noticeable when looking at very dark scenes at night but wasn't visible when watching content during the day. However this clouding was more apparent when watching HDR content, especially on darker material when watching at night. Using a 100% white pattern the screen was free of DSE (dirty screen effect) but the edges appeared slightly darker, which is strange when you consider that's where the LEDs are situated.
The panel didn't suffer from noticeable banding, however the backlight on the right third of the screen didn't quite match the other two thirds, which could be seen on content with a uniform background like football, especially when viewing at an angle. Speaking of viewing angles, since the 55N6800 uses a VA panel it shouldn't come as a surprise to discover that they are fairly limited. This is the normal trade-off for the superior black level performance of a VA panel but, as a result, if you sat more than 30 degrees off centre you would start to see a drop off in the contrast performance and any limitations in the backlight uniformity or backlight performance became more apparent.
Local DimmingAlthough the H55N6800 technically includes local dimming, we found it to be largely useless in operation. For a start, engaging the local dimming only moved the black level measurement to 0.019nits from a native measurement of 0.023nits, so it hardly seems worthwhile. Not only did the local dimming not make much difference but it was fairly obvious in operation, raising or lowering the brightness from one scene to the next. Thankfully the native black levels are good enough that local dimming is less important but we know, from reviewing other Hisense TVs, that the manufacturer is capable of delivering a more effective local dimming system than this, so there's room for improvement.
Motion HandlingThe motion handling on the H55N6800 was fairly standard for an LCD TV delivering around 300 lines of motion resolution in our benchmark test. If you engage the frame interpolation feature this will improve, although much like the local dimming the motion processing wasn't that good, only increasing the resolution to about 600, whilst film content will immediately start to look more like video. How we perceive motion varies from person to person but we wouldn't recommend using the frame interpolation for film-based content, however feel free to experiment with it when watching sports content. You have the choice of Clear, Standard and Smooth, although there didn't appear to be any obvious difference between the three. However if you watch a lot of football you might find the Custom setting useful, which will allow you to set the Judder and Blur Reduction controls to suit your personal tastes.
Standrad Dynamic Range (SDR)The H55N6800 delivered a solid performance and despite the errors in the greyscale and colour gamut, they weren't generally evident with normal viewing content. Depending which picture mode you choose, the whites could have either a slight yellow or blue tinge to them and the reds did appear a bit orange, which correlates with the feedback we have received from some owners. As we've already mentioned the local dimming is best avoided, as is the ultra smooth motion feature – at least when it comes to films – but the deinterlacing and upscaling of standard definition content was very good and looked nice on the 55-inch screen, whilst high definition content looked excellent, with the N6800 making full use of the 4K panel's extra resolution.
Despite our concerns in the testing section, with actual content the greyscale and colour gamut generally looked good and when combined with the decent video processing and native black levels, the results could be quite impressive, especially when using a high quality source like the Blu-ray of Guardians of the Galaxy Vol. 2. The motion handling was generally good and the backlight uniformity wasn't an issue when sat central to the screen and watching in a room with some ambient light. However, as mentioned earlier in the review, the limitations in the backlight became more apparent in the dark or once you start to move off axis by more than 30 degrees. As always with an LCD TV the addition of some bias lighting in your room can work wonders, especially when watching at night.
High Dynamic Range (HDR)Despite some less than impressive measurements in testing, the H55N6800 actually performed better than we expected with actual HDR content. The TV was capable of delivering a very watchable HDR experience and a reference disc like Planet Earth II looked impressive, despite the lower peak brightness. Although there were issues with the DCI-P3 colour tracking in our tests, with actual content the colours appeared realistically saturated and natural. The ability of the LCD panel to deliver a brighter overall image with a 100% test pattern also meant that the HDR images never appeared dull, even during the day, but it also meant the peak highlights were less apparent. That's because the 55N6800 could only deliver an accurate peak brightness of 427nits, which meant it was unable to produce the same impact as a model that could reach 1,000nits.
However, on a positive note this did mean that the Hisense was less likely to suffer the excessive clouding or bright edges that is often seen on edge-lit HDR TVs with a higher peak luminance. That's not to say that you didn't see some, especially at night, but it was less pronounced. The 55N6800 tracked the PQ EOTF fairly closely in the HDR Night mode and, as a result, the tone mapping handled the 'arriving in Neverland' scene in Pan quite well. The HDR Day mode boosted the overall brightness but did so at the expense of the peak highlights, which were clipped. Ultimately the H55N6800 was capable of delivering an HDR experience that was genuinely pleasing, with the wider colour gamut and peak highlights of a film like Guardians of the Galaxy Vol. 2 really shining through. Despite not having a proper 10-bit panel, we didn't have any issues with banding and the 55N6800 does offer those on a limited budget the chance to enjoy HDR.
Hisense H55N6800 Video Review
Input Lag & Energy Usage
In terms of the 55N6800’s energy consumption it proved to be comparable to similar LED LCD TVs that we have reviewed recently and using a full window 50% white pattern we measured the Standard picture mode at 109W and our calibrated Cinema Night mode at 73W, whilst the HDR Night mode naturally used more energy with a measurement of 146W.
How future-proof is this TV?
|4K Ultra HD Resolution|
|Colour Space (percentage of Rec.2020 - 100% best)||67%|
|HDMI 2.0a Inputs|
|HDCP 2.2 Support|
|4K Streaming Services|
|Smart TV Platform|
|Picture Accuracy Out-of-the-Box (score out of 10)||7|
|What do these mean?|
- Decent black levels and contrast ratios
- Excellent accuracy after calibration
- Good video processing
- Low input lag for gaming
- Plenty of features
- Solid build quality
- Competitive price
- Local dimming ineffective
- Only two HDMI 2.0 inputs
- HDR brightness limited
- Minor clouding on backlight
- Narrow optimal viewing angle
Hisense H55N6800 4K LED TV Review
The out of the box performance could have been better but the 55N6800 still delivered a very watchable image, especially when you consider the price. The image accuracy was even better after calibration, resulting in a genuinely impressive picture. There was a bit of clouding in the backlight but edge-lit TVs are always something of a lottery and the viewing angles of the VA panel are limited. Still that's the price you pay for good black levels and it's just as well the blacks are good because the local dimming needs work. The HDR performance was surprisingly effective, despite the limited peak brightness, and would provide those on a budget a chance to experience the benefits of HDR for themselves. Ultimately the Hisense H55N6800 offers a decent overall performance and great value for money making it worthy of recommendation.
Contrast/Dynamic Range/Black Level
Picture Quality Out-Of-The-Box
Picture Quality Calibrated
Ease Of Use
Value for Money
Our Review Ethos
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