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For this review we tested the 42in model in the 670T range, but it’s also available in 47in (47LM670T) and 55in (55LM670T) screen sizes. All models have identical specifications except for their dimensions and power usage. We’re confident that image quality will be practically identical across the range.
Television manufacturers often hold back top-end features from their mid-range sets to increase demand for more expensive models. Not so with LG. The 670T has almost every single feature of the more expensive 760T series but costs a lot less.

The main difference is that the 670T lacks a dual-core processor and only has 400Hz motion control instead of the 760T’s 800Hz. In practice, this means some of the more advanced image processing algorithms aren’t being used, but you still get plenty of display options to tweak.
In fact, we were impressed by how close we could match it to the more expensive set by spending a bit of time in the menu. Colours range from subtle to garish if you stick with the presets, but the image wizard helps you calibrate the display to suit your own preference. Noise reduction worked well on standard definition content, but HD video is where it excels. Our test footage looked very sharp and detailed, with only a few minor backlight inconsistencies in darker scenes.
3D footage impressed us further, helped by the incredibly vivid colours and refreshing lack of crosstalk. As long as you sit facing the TV straight on, passive 3D has a wow factor that active sets simply can’t match. Although it supports LG’s Dual Play 3D mode, which converts split-screen console games to fill the whole screen using polarised glasses, none are included in the box. You do at least get four pairs of regular 3D specs, plus a pair that clips on to glasses.
In terms of design, the LM670T is easily up there with the best of this year’s TVs. Its extremely slim silver metal bezel and matching stand look gorgeous and make a welcome change from the uniform black of other manufacturers’ TVs.
Around the back, the LM670T has all the connectivity we expect from a £1000 TV: four HDMI ports, SCART, component and composite video, and optical S/PDIF, RCA and 3.5mm audio ports, three USB ports, Ethernet and a Common Interface slot should be more than enough for most setups. In addition to PVR recording, you can play media from a memory stick, and we had no trouble playing all our test files, including DivX. You also get integrated Wi-Fi, which makes it easier to get connect to your network to access LG’s online portal receive and to receive DLNA media streams from a NAS or other computers.

There’s a huge range of content, including catch-up TV from BBC iPlayer, video streaming from YouTube, on-demand video services and access to the Facebook and Twitter social networking, as well as a rudimentary web browser. To make it easier to navigate, LG bundles a wand remote along with a regular remote control. It works like a Wii remote, moving a cursor on screen as you wave it around.

Although it lacks the high-end image processing of its more expensive counterpart, the LM670T is a well-equipped, good looking TV with some of the best passive 3D we’ve had the pleasure of using. 2D image quality isn’t quite as impressive as some rivals, most notably the Panasonic Viera TX-P42ST50B, but you still get a lot of TV for your money.