We calibrated our LG OLED55C7V-ZA review sample using a Klein K10-A colorimeter profiled against a JETI Spectraval 1511 reference-grade spectroradiometer, DVDO AVLab TPG and Murideo Fresco Six-G signal generators, as well as Portrait Displays’ CalMAN software.

Two screen sizes are available, namely the 55-inch LG OLED55C7V (which we tested), and the 65-inch OLED65C7V. In the United Kingdom, the C7V is advertised for sale exclusively by Currys/ PC World at this time of publication (June 2017). Last year’s C6 was curved, so you’d expect the same from the C7, but no – the OLED55C7V is vehemently flat. LG has decided against offering any bent TVs in its 2017 lineups, since market research show waning demand for the format. Have a play with the TruMotion settings, too. Everyone responds a little differently to motion-processing, but we can't imagine many will approve of the C7’s quite aggressive defaults.The LG E7 sounds a bit better, and the Sony KD-55A1 sounds a whole lot better - but don't forget that we’d recommend partnering all of these TVs with a separate sound system, so the C7’s comparative deficiencies shouldn’t matter to those who heed our advice.

On paper, a peak brightness of 690 nits amounts to only around half of what top LED LCDs can generate, but in some HDR scenes the LG OLED55C7V will actually look brighter in a side-by-side comparison. This is largely because of OLED’s unassailable per-pixel illumination control. Finally, the OLED55C7 proves a treat for gamers thanks to taking just 21ms to render its pictures, and delivers more impact from good quality native 4K sources than any previous OLED generation. This latter strength is mostly down, it seems, to LG’s improved color subtlety and light controls in the image’s darkest and brightest areas. But the C7 also has the same problem as the B7. That problem is the Sony A1, which builds on the raw materials provided by LG (the Sony KD-55A1 uses an LG OLED panel) with software that makes it even punchier and insightful.Size class of the display as declared by the manufacturer. Often this is the rounded value of the actual size of the diagonal in inches. Approximate width of the display. If the manufacturer does not provide such information, the width is calculated from the diagonal and the aspect ratio. There are various panel technologies. Each has its own specific features - viewing angles, color reproduction, response time, brightness/contrast, production cost, etc. The image quality depends directly on the type of the display panel used. Contrast remains the stand-out element, but for detail, definition and colour the LG continues to strike a near-perfect balance between being thrilling to watch and entirely realistic.

All 2017 OLED TVs from the major brands are going to be quite close in terms of picture performance, since they all use the same panel from LG Display – although one may do something better than others. Video processing on the Sony A1 OLED exhibits the least amount of posterisation and motion artefacts, while I expect Panasonic’s upcoming EZ952 and EZ1002 will deliver class-leading colour accuracy albeit without Dolby Vision. Information of the number of pixels in a unit of length. With the decrease of the display size and the increase of its resolution, the pixel density increases. HDR Performance TL;DR: The extra brightness LG has found for its OLED TVs this year has a transformative effect on the OLED55C7’s stellar HDR and 4K picture quality. Sound Approximate diagonal size of the display. If the manufacturer does not provide such information, the diagonal is calculated from the width and height of the screen.

Also, we found the C7’s somewhat sloped, rectangular table-top stand to be more stable than the crescent stand of the B7.

Watch standard-def content and you’ll find the LG's performance little short of miraculous. Considering the TV is making up the majority of what you’re seeing, the level of detail, sharpness and clarity to the image is astounding. Only another LG OLED can match the C7 in this regard. OLED TVs such as the LG C7 range also deliver very wide viewing angles, which almost don’t suffer from any decrease in contrast and saturation off-axis. You can sit almost anywhere in the room and not have your picture fade out. The ratio between the horizontal and the vertical side of the display. Some of the standard and widely used aspect ratios are 4:3, 5:4, 16:9 and 16:10.

It’s certainly a huge step-up from the sluggish, slightly buggy Android OS the Sony KD-55A1 runs on. The latest version of LG’s Magic Remote combines the motion-sensing pointer elements of previous designs with a full suite of buttons to give you the best of both worlds. That's where the flaws end, though. The OLED55C7’s picture performance is ultimately and categorically defined by its strengths, not its flaws. For instance, despite not having any visible speakers, the OLED55C7 supports Dolby Atmos. This only works with Atmos carried by Dolby Digital containers, though, not the Dolby True HD containers used on Blu-rays and Ultra HD Blu-rays (which greatly limits its usefulness) but it’s still of value for the hardcore audio enthusiasts among us. Although the OLED screen itself is extremely thin, there’s a rearward bulge halfway down the chassis to accommodate the TV’s processing and speaker components. Information about the number of pixels on the horizontal and vertical side of the screen. A higher resolution allows the display of a more detailed and of higher quality image.